77881700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:597

約数の個数: 72

約数和(自身を含む): 183738240

約数和(自身を除く): 105856540

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 139, 260, 278, 325, 431, 556, 650, 695, 862, 1300, 1390, 1724, 1807, 2155, 2780, 3475, 3614, 4310, 5603, 6950, 7228, 8620, 9035, 10775, 11206, 13900, 18070, 21550, 22412, 28015, 36140, 43100, 45175, 56030, 59909, 90350, 112060, 119818, 140075, 180700, 239636, 280150, 299545, 560300, 599090, 778817, 1198180, 1497725, 1557634, 2995450, 3115268, 3894085, 5990900, 7788170, 15576340, 19470425, 38940850, 77881700]

約数ペア:

[(1, 77881700), (2, 38940850), (4, 19470425), (5, 15576340), (10, 7788170), (13, 5990900), (20, 3894085), (25, 3115268), (26, 2995450), (50, 1557634), (52, 1497725), (65, 1198180), (100, 778817), (130, 599090), (139, 560300), (260, 299545), (278, 280150), (325, 239636), (431, 180700), (556, 140075), (650, 119818), (695, 112060), (862, 90350), (1300, 59909), (1390, 56030), (1724, 45175), (1807, 43100), (2155, 36140), (2780, 28015), (3475, 22412), (3614, 21550), (4310, 18070), (5603, 13900), (6950, 11206), (7228, 10775), (8620, 9035)]