21955440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:287

約数の個数: 160

約数和(自身を含む): 75995136

約数和(自身を除く): 54039696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 39, 40, 48, 52, 60, 62, 65, 78, 80, 93, 104, 120, 124, 130, 155, 156, 186, 195, 208, 227, 240, 248, 260, 310, 312, 372, 390, 403, 454, 465, 496, 520, 620, 624, 681, 744, 780, 806, 908, 930, 1040, 1135, 1209, 1240, 1362, 1488, 1560, 1612, 1816, 1860, 2015, 2270, 2418, 2480, 2724, 2951, 3120, 3224, 3405, 3632, 3720, 4030, 4540, 4836, 5448, 5902, 6045, 6448, 6810, 7037, 7440, 8060, 8853, 9080, 9672, 10896, 11804, 12090, 13620, 14074, 14755, 16120, 17706, 18160, 19344, 21111, 23608, 24180, 27240, 28148, 29510, 32240, 35185, 35412, 42222, 44265, 47216, 48360, 54480, 56296, 59020, 70370, 70824, 84444, 88530, 91481, 96720, 105555, 112592, 118040, 140740, 141648, 168888, 177060, 182962, 211110, 236080, 274443, 281480, 337776, 354120, 365924, 422220, 457405, 548886, 562960, 708240, 731848, 844440, 914810, 1097772, 1372215, 1463696, 1688880, 1829620, 2195544, 2744430, 3659240, 4391088, 5488860, 7318480, 10977720, 21955440]

約数ペア:

[(1, 21955440), (2, 10977720), (3, 7318480), (4, 5488860), (5, 4391088), (6, 3659240), (8, 2744430), (10, 2195544), (12, 1829620), (13, 1688880), (15, 1463696), (16, 1372215), (20, 1097772), (24, 914810), (26, 844440), (30, 731848), (31, 708240), (39, 562960), (40, 548886), (48, 457405), (52, 422220), (60, 365924), (62, 354120), (65, 337776), (78, 281480), (80, 274443), (93, 236080), (104, 211110), (120, 182962), (124, 177060), (130, 168888), (155, 141648), (156, 140740), (186, 118040), (195, 112592), (208, 105555), (227, 96720), (240, 91481), (248, 88530), (260, 84444), (310, 70824), (312, 70370), (372, 59020), (390, 56296), (403, 54480), (454, 48360), (465, 47216), (496, 44265), (520, 42222), (620, 35412), (624, 35185), (681, 32240), (744, 29510), (780, 28148), (806, 27240), (908, 24180), (930, 23608), (1040, 21111), (1135, 19344), (1209, 18160), (1240, 17706), (1362, 16120), (1488, 14755), (1560, 14074), (1612, 13620), (1816, 12090), (1860, 11804), (2015, 10896), (2270, 9672), (2418, 9080), (2480, 8853), (2724, 8060), (2951, 7440), (3120, 7037), (3224, 6810), (3405, 6448), (3632, 6045), (3720, 5902), (4030, 5448), (4540, 4836)]