21847660

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{20611}}^1$

素因数の和:20673

約数の個数: 24

約数和(自身を含む): 46748016

約数和(自身を除く): 24900356

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 20611, 41222, 82444, 103055, 206110, 412220, 1092383, 2184766, 4369532, 5461915, 10923830, 21847660]

約数ペア:

[(1, 21847660), (2, 10923830), (4, 5461915), (5, 4369532), (10, 2184766), (20, 1092383), (53, 412220), (106, 206110), (212, 103055), (265, 82444), (530, 41222), (1060, 20611)]