217991060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1557079}}^1$

素因数の和:1557095

約数の個数: 24

約数和(自身を含む): 523178880

約数和(自身を除く): 305187820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1557079, 3114158, 6228316, 7785395, 10899553, 15570790, 21799106, 31141580, 43598212, 54497765, 108995530, 217991060]

約数ペア:

[(1, 217991060), (2, 108995530), (4, 54497765), (5, 43598212), (7, 31141580), (10, 21799106), (14, 15570790), (20, 10899553), (28, 7785395), (35, 6228316), (70, 3114158), (140, 1557079)]