21305655189

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1373}}^1\times {\mathrm{18947}}^1$

素因数の和:20346

約数の個数: 48

約数和(自身を含む): 37906307712

約数和(自身を除く): 16600652523

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 1373, 4119, 9611, 12357, 17849, 18947, 28833, 53547, 56841, 86499, 124943, 132629, 160641, 170523, 246311, 374829, 397887, 738933, 1124487, 1193661, 1724177, 2216799, 5172531, 15517593, 26014231, 78042693, 182099617, 234128079, 338185003, 546298851, 1014555009, 1638896553, 2367295021, 3043665027, 7101885063, 21305655189]

約数ペア:

[(1, 21305655189), (3, 7101885063), (7, 3043665027), (9, 2367295021), (13, 1638896553), (21, 1014555009), (39, 546298851), (63, 338185003), (91, 234128079), (117, 182099617), (273, 78042693), (819, 26014231), (1373, 15517593), (4119, 5172531), (9611, 2216799), (12357, 1724177), (17849, 1193661), (18947, 1124487), (28833, 738933), (53547, 397887), (56841, 374829), (86499, 246311), (124943, 170523), (132629, 160641)]