20913490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8467}}^1$

素因数の和:8506

約数の個数: 32

約数和(自身を含む): 42678720

約数和(自身を除く): 21765230

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8467, 16934, 42335, 84670, 110071, 160873, 220142, 321746, 550355, 804365, 1100710, 1608730, 2091349, 4182698, 10456745, 20913490]

約数ペア:

[(1, 20913490), (2, 10456745), (5, 4182698), (10, 2091349), (13, 1608730), (19, 1100710), (26, 804365), (38, 550355), (65, 321746), (95, 220142), (130, 160873), (190, 110071), (247, 84670), (494, 42335), (1235, 16934), (2470, 8467)]