21369740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152641}}^1$

素因数の和:152657

約数の個数: 24

約数和(自身を含む): 51287712

約数和(自身を除く): 29917972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152641, 305282, 610564, 763205, 1068487, 1526410, 2136974, 3052820, 4273948, 5342435, 10684870, 21369740]

約数ペア:

[(1, 21369740), (2, 10684870), (4, 5342435), (5, 4273948), (7, 3052820), (10, 2136974), (14, 1526410), (20, 1068487), (28, 763205), (35, 610564), (70, 305282), (140, 152641)]