18118220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{14851}}^1$

素因数の和:14921

約数の個数: 24

約数和(自身を含む): 38674608

約数和(自身を除く): 20556388

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 14851, 29702, 59404, 74255, 148510, 297020, 905911, 1811822, 3623644, 4529555, 9059110, 18118220]

約数ペア:

[(1, 18118220), (2, 9059110), (4, 4529555), (5, 3623644), (10, 1811822), (20, 905911), (61, 297020), (122, 148510), (244, 74255), (305, 59404), (610, 29702), (1220, 14851)]