256426520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2551}}^1$

素因数の和:2928

約数の個数: 64

約数和(自身を含む): 661478400

約数和(自身を除く): 405051880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 359, 718, 1436, 1795, 2513, 2551, 2872, 3590, 5026, 5102, 7180, 10052, 10204, 12565, 12755, 14360, 17857, 20104, 20408, 25130, 25510, 35714, 50260, 51020, 71428, 89285, 100520, 102040, 142856, 178570, 357140, 714280, 915809, 1831618, 3663236, 4579045, 6410663, 7326472, 9158090, 12821326, 18316180, 25642652, 32053315, 36632360, 51285304, 64106630, 128213260, 256426520]

約数ペア:

[(1, 256426520), (2, 128213260), (4, 64106630), (5, 51285304), (7, 36632360), (8, 32053315), (10, 25642652), (14, 18316180), (20, 12821326), (28, 9158090), (35, 7326472), (40, 6410663), (56, 4579045), (70, 3663236), (140, 1831618), (280, 915809), (359, 714280), (718, 357140), (1436, 178570), (1795, 142856), (2513, 102040), (2551, 100520), (2872, 89285), (3590, 71428), (5026, 51020), (5102, 50260), (7180, 35714), (10052, 25510), (10204, 25130), (12565, 20408), (12755, 20104), (14360, 17857)]