19543240

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1571}}^1$

素因数の和:1893

約数の個数: 32

約数和(自身を含む): 44141760

約数和(自身を除く): 24598520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 1571, 2488, 3110, 3142, 6220, 6284, 7855, 12440, 12568, 15710, 31420, 62840, 488581, 977162, 1954324, 2442905, 3908648, 4885810, 9771620, 19543240]

約数ペア:

[(1, 19543240), (2, 9771620), (4, 4885810), (5, 3908648), (8, 2442905), (10, 1954324), (20, 977162), (40, 488581), (311, 62840), (622, 31420), (1244, 15710), (1555, 12568), (1571, 12440), (2488, 7855), (3110, 6284), (3142, 6220)]