19970291080

素因数分解:

$2^3\times 5^1\times {\mathrm{811}}^1\times {\mathrm{615607}}^1$

素因数の和:616429

約数の個数: 32

約数和(自身を含む): 44988632640

約数和(自身を除く): 25018341560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 811, 1622, 3244, 4055, 6488, 8110, 16220, 32440, 615607, 1231214, 2462428, 3078035, 4924856, 6156070, 12312140, 24624280, 499257277, 998514554, 1997029108, 2496286385, 3994058216, 4992572770, 9985145540, 19970291080]

約数ペア:

[(1, 19970291080), (2, 9985145540), (4, 4992572770), (5, 3994058216), (8, 2496286385), (10, 1997029108), (20, 998514554), (40, 499257277), (811, 24624280), (1622, 12312140), (3244, 6156070), (4055, 4924856), (6488, 3078035), (8110, 2462428), (16220, 1231214), (32440, 615607)]