205481640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:672

約数の個数: 256

約数和(自身を含む): 784465920

約数和(自身を除く): 578984280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 31, 35, 39, 40, 42, 52, 56, 60, 62, 65, 70, 78, 84, 91, 93, 104, 105, 120, 124, 130, 140, 155, 156, 168, 182, 186, 195, 210, 217, 248, 260, 273, 280, 310, 312, 364, 372, 390, 403, 420, 434, 455, 465, 520, 546, 607, 620, 651, 728, 744, 780, 806, 840, 868, 910, 930, 1085, 1092, 1209, 1214, 1240, 1302, 1365, 1560, 1612, 1736, 1820, 1821, 1860, 2015, 2170, 2184, 2418, 2428, 2604, 2730, 2821, 3035, 3224, 3255, 3640, 3642, 3720, 4030, 4249, 4340, 4836, 4856, 5208, 5460, 5642, 6045, 6070, 6510, 7284, 7891, 8060, 8463, 8498, 8680, 9105, 9672, 10920, 11284, 12090, 12140, 12747, 13020, 14105, 14568, 15782, 16120, 16926, 16996, 18210, 18817, 21245, 22568, 23673, 24180, 24280, 25494, 26040, 28210, 31564, 33852, 33992, 36420, 37634, 39455, 42315, 42490, 47346, 48360, 50988, 55237, 56420, 56451, 63128, 63735, 67704, 72840, 75268, 78910, 84630, 84980, 94085, 94692, 101976, 110474, 112840, 112902, 118365, 127470, 131719, 150536, 157820, 165711, 169260, 169960, 188170, 189384, 220948, 225804, 236730, 244621, 254940, 263438, 276185, 282255, 315640, 331422, 338520, 376340, 395157, 441896, 451608, 473460, 489242, 509880, 526876, 552370, 564510, 658595, 662844, 733863, 752680, 790314, 828555, 946920, 978484, 1053752, 1104740, 1129020, 1223105, 1317190, 1325688, 1467726, 1580628, 1657110, 1712347, 1956968, 1975785, 2209480, 2258040, 2446210, 2634380, 2935452, 3161256, 3314220, 3424694, 3669315, 3951570, 4892420, 5137041, 5268760, 5870904, 6628440, 6849388, 7338630, 7903140, 8561735, 9784840, 10274082, 13698776, 14677260, 15806280, 17123470, 20548164, 25685205, 29354520, 34246940, 41096328, 51370410, 68493880, 102740820, 205481640]

約数ペア:

[(1, 205481640), (2, 102740820), (3, 68493880), (4, 51370410), (5, 41096328), (6, 34246940), (7, 29354520), (8, 25685205), (10, 20548164), (12, 17123470), (13, 15806280), (14, 14677260), (15, 13698776), (20, 10274082), (21, 9784840), (24, 8561735), (26, 7903140), (28, 7338630), (30, 6849388), (31, 6628440), (35, 5870904), (39, 5268760), (40, 5137041), (42, 4892420), (52, 3951570), (56, 3669315), (60, 3424694), (62, 3314220), (65, 3161256), (70, 2935452), (78, 2634380), (84, 2446210), (91, 2258040), (93, 2209480), (104, 1975785), (105, 1956968), (120, 1712347), (124, 1657110), (130, 1580628), (140, 1467726), (155, 1325688), (156, 1317190), (168, 1223105), (182, 1129020), (186, 1104740), (195, 1053752), (210, 978484), (217, 946920), (248, 828555), (260, 790314), (273, 752680), (280, 733863), (310, 662844), (312, 658595), (364, 564510), (372, 552370), (390, 526876), (403, 509880), (420, 489242), (434, 473460), (455, 451608), (465, 441896), (520, 395157), (546, 376340), (607, 338520), (620, 331422), (651, 315640), (728, 282255), (744, 276185), (780, 263438), (806, 254940), (840, 244621), (868, 236730), (910, 225804), (930, 220948), (1085, 189384), (1092, 188170), (1209, 169960), (1214, 169260), (1240, 165711), (1302, 157820), (1365, 150536), (1560, 131719), (1612, 127470), (1736, 118365), (1820, 112902), (1821, 112840), (1860, 110474), (2015, 101976), (2170, 94692), (2184, 94085), (2418, 84980), (2428, 84630), (2604, 78910), (2730, 75268), (2821, 72840), (3035, 67704), (3224, 63735), (3255, 63128), (3640, 56451), (3642, 56420), (3720, 55237), (4030, 50988), (4249, 48360), (4340, 47346), (4836, 42490), (4856, 42315), (5208, 39455), (5460, 37634), (5642, 36420), (6045, 33992), (6070, 33852), (6510, 31564), (7284, 28210), (7891, 26040), (8060, 25494), (8463, 24280), (8498, 24180), (8680, 23673), (9105, 22568), (9672, 21245), (10920, 18817), (11284, 18210), (12090, 16996), (12140, 16926), (12747, 16120), (13020, 15782), (14105, 14568)]