20935880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74771}}^1$

素因数の和:74789

約数の個数: 32

約数和(自身を含む): 53835840

約数和(自身を除く): 32899960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74771, 149542, 299084, 373855, 523397, 598168, 747710, 1046794, 1495420, 2093588, 2616985, 2990840, 4187176, 5233970, 10467940, 20935880]

約数ペア:

[(1, 20935880), (2, 10467940), (4, 5233970), (5, 4187176), (7, 2990840), (8, 2616985), (10, 2093588), (14, 1495420), (20, 1046794), (28, 747710), (35, 598168), (40, 523397), (56, 373855), (70, 299084), (140, 149542), (280, 74771)]