21566380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{587}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 28220756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 167, 220, 334, 587, 668, 835, 1174, 1670, 1837, 2348, 2935, 3340, 3674, 5870, 6457, 7348, 9185, 11740, 12914, 18370, 25828, 32285, 36740, 64570, 98029, 129140, 196058, 392116, 490145, 980290, 1078319, 1960580, 2156638, 4313276, 5391595, 10783190, 21566380]

約数ペア:

[(1, 21566380), (2, 10783190), (4, 5391595), (5, 4313276), (10, 2156638), (11, 1960580), (20, 1078319), (22, 980290), (44, 490145), (55, 392116), (110, 196058), (167, 129140), (220, 98029), (334, 64570), (587, 36740), (668, 32285), (835, 25828), (1174, 18370), (1670, 12914), (1837, 11740), (2348, 9185), (2935, 7348), (3340, 6457), (3674, 5870)]