21615055

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2441}}^1$

素因数の和:2487

約数の個数: 32

約数和(自身を含む): 33758208

約数和(自身を除く): 12143153

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 2441, 8855, 12205, 17087, 26851, 56143, 85435, 134255, 187957, 280715, 393001, 617573, 939785, 1965005, 3087865, 4323011, 21615055]

約数ペア:

[(1, 21615055), (5, 4323011), (7, 3087865), (11, 1965005), (23, 939785), (35, 617573), (55, 393001), (77, 280715), (115, 187957), (161, 134255), (253, 85435), (385, 56143), (805, 26851), (1265, 17087), (1771, 12205), (2441, 8855)]