20070115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 28195776

約数和(自身を除く): 8125661

約数列:

[1, 5, 13, 17, 41, 65, 85, 205, 221, 443, 533, 697, 1105, 2215, 2665, 3485, 5759, 7531, 9061, 18163, 28795, 37655, 45305, 90815, 97903, 236119, 308771, 489515, 1180595, 1543855, 4014023, 20070115]

約数ペア:

[(1, 20070115), (5, 4014023), (13, 1543855), (17, 1180595), (41, 489515), (65, 308771), (85, 236119), (205, 97903), (221, 90815), (443, 45305), (533, 37655), (697, 28795), (1105, 18163), (2215, 9061), (2665, 7531), (3485, 5759)]