21361599

素因数分解:

$3^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{821}}^1$

素因数の和:900

約数の個数: 36

約数和(自身を含む): 36546120

約数和(自身を除く): 15184521

約数列:

[1, 3, 7, 9, 21, 49, 59, 63, 147, 177, 413, 441, 531, 821, 1239, 2463, 2891, 3717, 5747, 7389, 8673, 17241, 26019, 40229, 48439, 51723, 120687, 145317, 339073, 362061, 435951, 1017219, 2373511, 3051657, 7120533, 21361599]

約数ペア:

[(1, 21361599), (3, 7120533), (7, 3051657), (9, 2373511), (21, 1017219), (49, 435951), (59, 362061), (63, 339073), (147, 145317), (177, 120687), (413, 51723), (441, 48439), (531, 40229), (821, 26019), (1239, 17241), (2463, 8673), (2891, 7389), (3717, 5747)]