1621240

素因数分解:

$2^3\times 5^1\times {\mathrm{40531}}^1$

素因数の和:40542

約数の個数: 16

約数和(自身を含む): 3647880

約数和(自身を除く): 2026640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 40531, 81062, 162124, 202655, 324248, 405310, 810620, 1621240]

約数ペア:

[(1, 1621240), (2, 810620), (4, 405310), (5, 324248), (8, 202655), (10, 162124), (20, 81062), (40, 40531)]