21135436

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{887}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 45351936

約数和(自身を除く): 24216500

約数列:

[1, 2, 4, 7, 14, 23, 28, 37, 46, 74, 92, 148, 161, 259, 322, 518, 644, 851, 887, 1036, 1702, 1774, 3404, 3548, 5957, 6209, 11914, 12418, 20401, 23828, 24836, 32819, 40802, 65638, 81604, 131276, 142807, 229733, 285614, 459466, 571228, 754837, 918932, 1509674, 3019348, 5283859, 10567718, 21135436]

約数ペア:

[(1, 21135436), (2, 10567718), (4, 5283859), (7, 3019348), (14, 1509674), (23, 918932), (28, 754837), (37, 571228), (46, 459466), (74, 285614), (92, 229733), (148, 142807), (161, 131276), (259, 81604), (322, 65638), (518, 40802), (644, 32819), (851, 24836), (887, 23828), (1036, 20401), (1702, 12418), (1774, 11914), (3404, 6209), (3548, 5957)]