3990399

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 6535680

約数和(自身を除く): 2545281

約数列:

[1, 3, 7, 19, 21, 57, 73, 133, 137, 219, 399, 411, 511, 959, 1387, 1533, 2603, 2877, 4161, 7809, 9709, 10001, 18221, 29127, 30003, 54663, 70007, 190019, 210021, 570057, 1330133, 3990399]

約数ペア:

[(1, 3990399), (3, 1330133), (7, 570057), (19, 210021), (21, 190019), (57, 70007), (73, 54663), (133, 30003), (137, 29127), (219, 18221), (399, 10001), (411, 9709), (511, 7809), (959, 4161), (1387, 2877), (1533, 2603)]