21531378

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2347}}^1$

素因数の和:2502

約数の個数: 32

約数和(自身を含む): 47335680

約数和(自身を除く): 25804302

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 139, 278, 417, 834, 1529, 2347, 3058, 4587, 4694, 7041, 9174, 14082, 25817, 51634, 77451, 154902, 326233, 652466, 978699, 1957398, 3588563, 7177126, 10765689, 21531378]

約数ペア:

[(1, 21531378), (2, 10765689), (3, 7177126), (6, 3588563), (11, 1957398), (22, 978699), (33, 652466), (66, 326233), (139, 154902), (278, 77451), (417, 51634), (834, 25817), (1529, 14082), (2347, 9174), (3058, 7041), (4587, 4694)]