21877580

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{6323}}^1$

素因数の和:6505

約数の個数: 24

約数和(自身を含む): 46215792

約数和(自身を除く): 24338212

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 6323, 12646, 25292, 31615, 63230, 126460, 1093879, 2187758, 4375516, 5469395, 10938790, 21877580]

約数ペア:

[(1, 21877580), (2, 10938790), (4, 5469395), (5, 4375516), (10, 2187758), (20, 1093879), (173, 126460), (346, 63230), (692, 31615), (865, 25292), (1730, 12646), (3460, 6323)]