20451445

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 8744843

約数列:

[1, 5, 7, 35, 43, 107, 127, 215, 301, 535, 635, 749, 889, 1505, 3745, 4445, 4601, 5461, 13589, 23005, 27305, 32207, 38227, 67945, 95123, 161035, 191135, 475615, 584327, 2921635, 4090289, 20451445]

約数ペア:

[(1, 20451445), (5, 4090289), (7, 2921635), (35, 584327), (43, 475615), (107, 191135), (127, 161035), (215, 95123), (301, 67945), (535, 38227), (635, 32207), (749, 27305), (889, 23005), (1505, 13589), (3745, 5461), (4445, 4601)]