21008380

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9817}}^1$

素因数の和:9933

約数の個数: 24

約数和(自身を含む): 44534448

約数和(自身を除く): 23526068

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9817, 19634, 39268, 49085, 98170, 196340, 1050419, 2100838, 4201676, 5252095, 10504190, 21008380]

約数ペア:

[(1, 21008380), (2, 10504190), (4, 5252095), (5, 4201676), (10, 2100838), (20, 1050419), (107, 196340), (214, 98170), (428, 49085), (535, 39268), (1070, 19634), (2140, 9817)]