1221340

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{773}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 2600640

約数和(自身を除く): 1379300

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 773, 790, 1546, 1580, 3092, 3865, 7730, 15460, 61067, 122134, 244268, 305335, 610670, 1221340]

約数ペア:

[(1, 1221340), (2, 610670), (4, 305335), (5, 244268), (10, 122134), (20, 61067), (79, 15460), (158, 7730), (316, 3865), (395, 3092), (773, 1580), (790, 1546)]