18966680

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2909}}^1$

素因数の和:3083

約数の個数: 32

約数和(自身を含む): 42951600

約数和(自身を除く): 23984920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2909, 3260, 5818, 6520, 11636, 14545, 23272, 29090, 58180, 116360, 474167, 948334, 1896668, 2370835, 3793336, 4741670, 9483340, 18966680]

約数ペア:

[(1, 18966680), (2, 9483340), (4, 4741670), (5, 3793336), (8, 2370835), (10, 1896668), (20, 948334), (40, 474167), (163, 116360), (326, 58180), (652, 29090), (815, 23272), (1304, 14545), (1630, 11636), (2909, 6520), (3260, 5818)]