21500735

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 4916929

約数列:

[1, 5, 83, 103, 415, 503, 515, 2515, 8549, 41749, 42745, 51809, 208745, 259045, 4300147, 21500735]

約数ペア:

[(1, 21500735), (5, 4300147), (83, 259045), (103, 208745), (415, 51809), (503, 42745), (515, 41749), (2515, 8549)]