18253420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 40320000

約数和(自身を除く): 22066580

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 155, 236, 295, 310, 499, 590, 620, 998, 1180, 1829, 1996, 2495, 3658, 4990, 7316, 9145, 9980, 15469, 18290, 29441, 30938, 36580, 58882, 61876, 77345, 117764, 147205, 154690, 294410, 309380, 588820, 912671, 1825342, 3650684, 4563355, 9126710, 18253420]

約数ペア:

[(1, 18253420), (2, 9126710), (4, 4563355), (5, 3650684), (10, 1825342), (20, 912671), (31, 588820), (59, 309380), (62, 294410), (118, 154690), (124, 147205), (155, 117764), (236, 77345), (295, 61876), (310, 58882), (499, 36580), (590, 30938), (620, 29441), (998, 18290), (1180, 15469), (1829, 9980), (1996, 9145), (2495, 7316), (3658, 4990)]