19737920

素因数分解:

$2^6\times 5^1\times {\mathrm{61681}}^1$

素因数の和:61698

約数の個数: 28

約数和(自身を含む): 47001684

約数和(自身を除く): 27263764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 61681, 123362, 246724, 308405, 493448, 616810, 986896, 1233620, 1973792, 2467240, 3947584, 4934480, 9868960, 19737920]

約数ペア:

[(1, 19737920), (2, 9868960), (4, 4934480), (5, 3947584), (8, 2467240), (10, 1973792), (16, 1233620), (20, 986896), (32, 616810), (40, 493448), (64, 308405), (80, 246724), (160, 123362), (320, 61681)]