258539905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{557}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 345540384

約数和(自身を除く): 87000479

約数列:

[1, 5, 13, 37, 65, 185, 193, 481, 557, 965, 2405, 2509, 2785, 7141, 7241, 12545, 20609, 35705, 36205, 92833, 103045, 107501, 267917, 464165, 537505, 1339585, 1397513, 3977537, 6987565, 19887685, 51707981, 258539905]

約数ペア:

[(1, 258539905), (5, 51707981), (13, 19887685), (37, 6987565), (65, 3977537), (185, 1397513), (193, 1339585), (481, 537505), (557, 464165), (965, 267917), (2405, 107501), (2509, 103045), (2785, 92833), (7141, 36205), (7241, 35705), (12545, 20609)]