20249740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20663}}^1$

素因数の和:20686

約数の個数: 36

約数和(自身を含む): 49469616

約数和(自身を除く): 29219876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20663, 41326, 82652, 103315, 144641, 206630, 289282, 413260, 578564, 723205, 1012487, 1446410, 2024974, 2892820, 4049948, 5062435, 10124870, 20249740]

約数ペア:

[(1, 20249740), (2, 10124870), (4, 5062435), (5, 4049948), (7, 2892820), (10, 2024974), (14, 1446410), (20, 1012487), (28, 723205), (35, 578564), (49, 413260), (70, 289282), (98, 206630), (140, 144641), (196, 103315), (245, 82652), (490, 41326), (980, 20663)]