212890240

素因数分解:

$2^7\times 5^1\times {\mathrm{332641}}^1$

素因数の和:332660

約数の個数: 32

約数和(自身を含む): 508942260

約数和(自身を除く): 296052020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 332641, 665282, 1330564, 1663205, 2661128, 3326410, 5322256, 6652820, 10644512, 13305640, 21289024, 26611280, 42578048, 53222560, 106445120, 212890240]

約数ペア:

[(1, 212890240), (2, 106445120), (4, 53222560), (5, 42578048), (8, 26611280), (10, 21289024), (16, 13305640), (20, 10644512), (32, 6652820), (40, 5322256), (64, 3326410), (80, 2661128), (128, 1663205), (160, 1330564), (320, 665282), (640, 332641)]