18727790

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:596

約数の個数: 32

約数和(自身を含む): 34927200

約数和(自身を除く): 16199410

約数列:

[1, 2, 5, 10, 43, 86, 97, 194, 215, 430, 449, 485, 898, 970, 2245, 4171, 4490, 8342, 19307, 20855, 38614, 41710, 43553, 87106, 96535, 193070, 217765, 435530, 1872779, 3745558, 9363895, 18727790]

約数ペア:

[(1, 18727790), (2, 9363895), (5, 3745558), (10, 1872779), (43, 435530), (86, 217765), (97, 193070), (194, 96535), (215, 87106), (430, 43553), (449, 41710), (485, 38614), (898, 20855), (970, 19307), (2245, 8342), (4171, 4490)]