21979640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32323}}^1$

素因数の和:32351

約数の個数: 32

約数和(自身を含む): 52364880

約数和(自身を除く): 30385240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32323, 64646, 129292, 161615, 258584, 323230, 549491, 646460, 1098982, 1292920, 2197964, 2747455, 4395928, 5494910, 10989820, 21979640]

約数ペア:

[(1, 21979640), (2, 10989820), (4, 5494910), (5, 4395928), (8, 2747455), (10, 2197964), (17, 1292920), (20, 1098982), (34, 646460), (40, 549491), (68, 323230), (85, 258584), (136, 161615), (170, 129292), (340, 64646), (680, 32323)]