21601420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34841}}^1$

素因数の和:34881

約数の個数: 24

約数和(自身を含む): 46827648

約数和(自身を除く): 25226228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34841, 69682, 139364, 174205, 348410, 696820, 1080071, 2160142, 4320284, 5400355, 10800710, 21601420]

約数ペア:

[(1, 21601420), (2, 10800710), (4, 5400355), (5, 4320284), (10, 2160142), (20, 1080071), (31, 696820), (62, 348410), (124, 174205), (155, 139364), (310, 69682), (620, 34841)]