21150580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{757}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 48900096

約数和(自身を除く): 27749516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 127, 220, 254, 508, 635, 757, 1270, 1397, 1514, 2540, 2794, 3028, 3785, 5588, 6985, 7570, 8327, 13970, 15140, 16654, 27940, 33308, 41635, 83270, 96139, 166540, 192278, 384556, 480695, 961390, 1057529, 1922780, 2115058, 4230116, 5287645, 10575290, 21150580]

約数ペア:

[(1, 21150580), (2, 10575290), (4, 5287645), (5, 4230116), (10, 2115058), (11, 1922780), (20, 1057529), (22, 961390), (44, 480695), (55, 384556), (110, 192278), (127, 166540), (220, 96139), (254, 83270), (508, 41635), (635, 33308), (757, 27940), (1270, 16654), (1397, 15140), (1514, 13970), (2540, 8327), (2794, 7570), (3028, 6985), (3785, 5588)]