278827640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:422

約数の個数: 192

約数和(自身を含む): 813576960

約数和(自身を除く): 534749320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 49, 52, 56, 62, 65, 70, 91, 98, 104, 124, 130, 140, 155, 182, 196, 217, 245, 248, 260, 280, 310, 353, 364, 392, 403, 434, 455, 490, 520, 620, 637, 706, 728, 806, 868, 910, 980, 1085, 1240, 1274, 1412, 1519, 1612, 1736, 1765, 1820, 1960, 2015, 2170, 2471, 2548, 2821, 2824, 3038, 3185, 3224, 3530, 3640, 4030, 4340, 4589, 4942, 5096, 5642, 6076, 6370, 7060, 7595, 8060, 8680, 9178, 9884, 10943, 11284, 12152, 12355, 12740, 14105, 14120, 15190, 16120, 17297, 18356, 19747, 19768, 21886, 22568, 22945, 24710, 25480, 28210, 30380, 32123, 34594, 36712, 39494, 43772, 45890, 49420, 54715, 56420, 60760, 64246, 69188, 76601, 78988, 86485, 87544, 91780, 98735, 98840, 109430, 112840, 128492, 138376, 142259, 153202, 157976, 160615, 172970, 183560, 197470, 218860, 224861, 256984, 284518, 306404, 321230, 345940, 383005, 394940, 437720, 449722, 536207, 569036, 612808, 642460, 691880, 711295, 766010, 789880, 899444, 995813, 1072414, 1124305, 1138072, 1284920, 1422590, 1532020, 1798888, 1991626, 2144828, 2248610, 2681035, 2845180, 3064040, 3983252, 4289656, 4497220, 4979065, 5362070, 5690360, 6970691, 7966504, 8994440, 9958130, 10724140, 13941382, 19916260, 21448280, 27882764, 34853455, 39832520, 55765528, 69706910, 139413820, 278827640]

約数ペア:

[(1, 278827640), (2, 139413820), (4, 69706910), (5, 55765528), (7, 39832520), (8, 34853455), (10, 27882764), (13, 21448280), (14, 19916260), (20, 13941382), (26, 10724140), (28, 9958130), (31, 8994440), (35, 7966504), (40, 6970691), (49, 5690360), (52, 5362070), (56, 4979065), (62, 4497220), (65, 4289656), (70, 3983252), (91, 3064040), (98, 2845180), (104, 2681035), (124, 2248610), (130, 2144828), (140, 1991626), (155, 1798888), (182, 1532020), (196, 1422590), (217, 1284920), (245, 1138072), (248, 1124305), (260, 1072414), (280, 995813), (310, 899444), (353, 789880), (364, 766010), (392, 711295), (403, 691880), (434, 642460), (455, 612808), (490, 569036), (520, 536207), (620, 449722), (637, 437720), (706, 394940), (728, 383005), (806, 345940), (868, 321230), (910, 306404), (980, 284518), (1085, 256984), (1240, 224861), (1274, 218860), (1412, 197470), (1519, 183560), (1612, 172970), (1736, 160615), (1765, 157976), (1820, 153202), (1960, 142259), (2015, 138376), (2170, 128492), (2471, 112840), (2548, 109430), (2821, 98840), (2824, 98735), (3038, 91780), (3185, 87544), (3224, 86485), (3530, 78988), (3640, 76601), (4030, 69188), (4340, 64246), (4589, 60760), (4942, 56420), (5096, 54715), (5642, 49420), (6076, 45890), (6370, 43772), (7060, 39494), (7595, 36712), (8060, 34594), (8680, 32123), (9178, 30380), (9884, 28210), (10943, 25480), (11284, 24710), (12152, 22945), (12355, 22568), (12740, 21886), (14105, 19768), (14120, 19747), (15190, 18356), (16120, 17297)]