21798580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35159}}^1$

素因数の和:35199

約数の個数: 24

約数和(自身を含む): 47255040

約数和(自身を除く): 25456460

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35159, 70318, 140636, 175795, 351590, 703180, 1089929, 2179858, 4359716, 5449645, 10899290, 21798580]

約数ペア:

[(1, 21798580), (2, 10899290), (4, 5449645), (5, 4359716), (10, 2179858), (20, 1089929), (31, 703180), (62, 351590), (124, 175795), (155, 140636), (310, 70318), (620, 35159)]