21380394

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{10831}}^1$

素因数の和:10890

約数の個数: 32

約数和(自身を含む): 49913856

約数和(自身を除く): 28533462

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 47, 94, 141, 282, 329, 658, 987, 1974, 10831, 21662, 32493, 64986, 75817, 151634, 227451, 454902, 509057, 1018114, 1527171, 3054342, 3563399, 7126798, 10690197, 21380394]

約数ペア:

[(1, 21380394), (2, 10690197), (3, 7126798), (6, 3563399), (7, 3054342), (14, 1527171), (21, 1018114), (42, 509057), (47, 454902), (94, 227451), (141, 151634), (282, 75817), (329, 64986), (658, 32493), (987, 21662), (1974, 10831)]