31006480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20399}}^1$

素因数の和:20431

約数の個数: 40

約数和(自身を含む): 75888000

約数和(自身を除く): 44881520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20399, 40798, 81596, 101995, 163192, 203990, 326384, 387581, 407980, 775162, 815960, 1550324, 1631920, 1937905, 3100648, 3875810, 6201296, 7751620, 15503240, 31006480]

約数ペア:

[(1, 31006480), (2, 15503240), (4, 7751620), (5, 6201296), (8, 3875810), (10, 3100648), (16, 1937905), (19, 1631920), (20, 1550324), (38, 815960), (40, 775162), (76, 407980), (80, 387581), (95, 326384), (152, 203990), (190, 163192), (304, 101995), (380, 81596), (760, 40798), (1520, 20399)]