20495605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 27941760

約数和(自身を除く): 7446155

約数列:

[1, 5, 13, 29, 65, 83, 131, 145, 377, 415, 655, 1079, 1703, 1885, 2407, 3799, 5395, 8515, 10873, 12035, 18995, 31291, 49387, 54365, 141349, 156455, 246935, 315317, 706745, 1576585, 4099121, 20495605]

約数ペア:

[(1, 20495605), (5, 4099121), (13, 1576585), (29, 706745), (65, 315317), (83, 246935), (131, 156455), (145, 141349), (377, 54365), (415, 49387), (655, 31291), (1079, 18995), (1703, 12035), (1885, 10873), (2407, 8515), (3799, 5395)]