21888685

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{659}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 10931795

約数列:

[1, 5, 7, 13, 35, 65, 73, 91, 365, 455, 511, 659, 949, 2555, 3295, 4613, 4745, 6643, 8567, 23065, 33215, 42835, 48107, 59969, 240535, 299845, 336749, 625391, 1683745, 3126955, 4377737, 21888685]

約数ペア:

[(1, 21888685), (5, 4377737), (7, 3126955), (13, 1683745), (35, 625391), (65, 336749), (73, 299845), (91, 240535), (365, 59969), (455, 48107), (511, 42835), (659, 33215), (949, 23065), (2555, 8567), (3295, 6643), (4613, 4745)]