19540540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31517}}^1$

素因数の和:31557

約数の個数: 24

約数和(自身を含む): 42360192

約数和(自身を除く): 22819652

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31517, 63034, 126068, 157585, 315170, 630340, 977027, 1954054, 3908108, 4885135, 9770270, 19540540]

約数ペア:

[(1, 19540540), (2, 9770270), (4, 4885135), (5, 3908108), (10, 1954054), (20, 977027), (31, 630340), (62, 315170), (124, 157585), (155, 126068), (310, 63034), (620, 31517)]