21651679920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{161387}}^1$

素因数の和:161459

約数の個数: 160

約数和(自身を含む): 73964765952

約数和(自身を除く): 52313086032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 43, 48, 52, 60, 65, 78, 80, 86, 104, 120, 129, 130, 156, 172, 195, 208, 215, 240, 258, 260, 312, 344, 390, 430, 516, 520, 559, 624, 645, 688, 780, 860, 1032, 1040, 1118, 1290, 1560, 1677, 1720, 2064, 2236, 2580, 2795, 3120, 3354, 3440, 4472, 5160, 5590, 6708, 8385, 8944, 10320, 11180, 13416, 16770, 22360, 26832, 33540, 44720, 67080, 134160, 161387, 322774, 484161, 645548, 806935, 968322, 1291096, 1613870, 1936644, 2098031, 2420805, 2582192, 3227740, 3873288, 4196062, 4841610, 6294093, 6455480, 6939641, 7746576, 8392124, 9683220, 10490155, 12588186, 12910960, 13879282, 16784248, 19366440, 20818923, 20980310, 25176372, 27758564, 31470465, 33568496, 34698205, 38732880, 41637846, 41960620, 50352744, 55517128, 62940930, 69396410, 83275692, 83921240, 90215333, 100705488, 104094615, 111034256, 125881860, 138792820, 166551384, 167842480, 180430666, 208189230, 251763720, 270645999, 277585640, 333102768, 360861332, 416378460, 451076665, 503527440, 541291998, 555171280, 721722664, 832756920, 902153330, 1082583996, 1353229995, 1443445328, 1665513840, 1804306660, 2165167992, 2706459990, 3608613320, 4330335984, 5412919980, 7217226640, 10825839960, 21651679920]

約数ペア:

[(1, 21651679920), (2, 10825839960), (3, 7217226640), (4, 5412919980), (5, 4330335984), (6, 3608613320), (8, 2706459990), (10, 2165167992), (12, 1804306660), (13, 1665513840), (15, 1443445328), (16, 1353229995), (20, 1082583996), (24, 902153330), (26, 832756920), (30, 721722664), (39, 555171280), (40, 541291998), (43, 503527440), (48, 451076665), (52, 416378460), (60, 360861332), (65, 333102768), (78, 277585640), (80, 270645999), (86, 251763720), (104, 208189230), (120, 180430666), (129, 167842480), (130, 166551384), (156, 138792820), (172, 125881860), (195, 111034256), (208, 104094615), (215, 100705488), (240, 90215333), (258, 83921240), (260, 83275692), (312, 69396410), (344, 62940930), (390, 55517128), (430, 50352744), (516, 41960620), (520, 41637846), (559, 38732880), (624, 34698205), (645, 33568496), (688, 31470465), (780, 27758564), (860, 25176372), (1032, 20980310), (1040, 20818923), (1118, 19366440), (1290, 16784248), (1560, 13879282), (1677, 12910960), (1720, 12588186), (2064, 10490155), (2236, 9683220), (2580, 8392124), (2795, 7746576), (3120, 6939641), (3354, 6455480), (3440, 6294093), (4472, 4841610), (5160, 4196062), (5590, 3873288), (6708, 3227740), (8385, 2582192), (8944, 2420805), (10320, 2098031), (11180, 1936644), (13416, 1613870), (16770, 1291096), (22360, 968322), (26832, 806935), (33540, 645548), (44720, 484161), (67080, 322774), (134160, 161387)]