18638395

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 24675840

約数和(自身を除く): 6037445

約数列:

[1, 5, 23, 41, 59, 67, 115, 205, 295, 335, 943, 1357, 1541, 2419, 2747, 3953, 4715, 6785, 7705, 12095, 13735, 19765, 55637, 63181, 90919, 162073, 278185, 315905, 454595, 810365, 3727679, 18638395]

約数ペア:

[(1, 18638395), (5, 3727679), (23, 810365), (41, 454595), (59, 315905), (67, 278185), (115, 162073), (205, 90919), (295, 63181), (335, 55637), (943, 19765), (1357, 13735), (1541, 12095), (2419, 7705), (2747, 6785), (3953, 4715)]