21403856

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{283}}^1$

素因数の和:483

約数の個数: 40

約数和(自身を含む): 43315680

約数和(自身を除く): 21911824

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 163, 232, 283, 326, 464, 566, 652, 1132, 1304, 2264, 2608, 4528, 4727, 8207, 9454, 16414, 18908, 32828, 37816, 46129, 65656, 75632, 92258, 131312, 184516, 369032, 738064, 1337741, 2675482, 5350964, 10701928, 21403856]

約数ペア:

[(1, 21403856), (2, 10701928), (4, 5350964), (8, 2675482), (16, 1337741), (29, 738064), (58, 369032), (116, 184516), (163, 131312), (232, 92258), (283, 75632), (326, 65656), (464, 46129), (566, 37816), (652, 32828), (1132, 18908), (1304, 16414), (2264, 9454), (2608, 8207), (4528, 4727)]