90806420

素因数分解:

$2^2\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{2521}}^1$

素因数の和:4331

約数の個数: 24

約数和(自身を含む): 190875048

約数和(自身を除く): 100068628

約数列:

[1, 2, 4, 5, 10, 20, 1801, 2521, 3602, 5042, 7204, 9005, 10084, 12605, 18010, 25210, 36020, 50420, 4540321, 9080642, 18161284, 22701605, 45403210, 90806420]

約数ペア:

[(1, 90806420), (2, 45403210), (4, 22701605), (5, 18161284), (10, 9080642), (20, 4540321), (1801, 50420), (2521, 36020), (3602, 25210), (5042, 18010), (7204, 12605), (9005, 10084)]