25316680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 59875200

約数和(自身を除く): 34558520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 359, 410, 430, 718, 820, 860, 1436, 1640, 1720, 1763, 1795, 2872, 3526, 3590, 7052, 7180, 8815, 14104, 14360, 14719, 15437, 17630, 29438, 30874, 35260, 58876, 61748, 70520, 73595, 77185, 117752, 123496, 147190, 154370, 294380, 308740, 588760, 617480, 632917, 1265834, 2531668, 3164585, 5063336, 6329170, 12658340, 25316680]

約数ペア:

[(1, 25316680), (2, 12658340), (4, 6329170), (5, 5063336), (8, 3164585), (10, 2531668), (20, 1265834), (40, 632917), (41, 617480), (43, 588760), (82, 308740), (86, 294380), (164, 154370), (172, 147190), (205, 123496), (215, 117752), (328, 77185), (344, 73595), (359, 70520), (410, 61748), (430, 58876), (718, 35260), (820, 30874), (860, 29438), (1436, 17630), (1640, 15437), (1720, 14719), (1763, 14360), (1795, 14104), (2872, 8815), (3526, 7180), (3590, 7052)]