21291340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152081}}^1$

素因数の和:152097

約数の個数: 24

約数和(自身を含む): 51099552

約数和(自身を除く): 29808212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152081, 304162, 608324, 760405, 1064567, 1520810, 2129134, 3041620, 4258268, 5322835, 10645670, 21291340]

約数ペア:

[(1, 21291340), (2, 10645670), (4, 5322835), (5, 4258268), (7, 3041620), (10, 2129134), (14, 1520810), (20, 1064567), (28, 760405), (35, 608324), (70, 304162), (140, 152081)]