20213960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38873}}^1$

素因数の和:38897

約数の個数: 32

約数和(自身を含む): 48981240

約数和(自身を除く): 28767280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38873, 77746, 155492, 194365, 310984, 388730, 505349, 777460, 1010698, 1554920, 2021396, 2526745, 4042792, 5053490, 10106980, 20213960]

約数ペア:

[(1, 20213960), (2, 10106980), (4, 5053490), (5, 4042792), (8, 2526745), (10, 2021396), (13, 1554920), (20, 1010698), (26, 777460), (40, 505349), (52, 388730), (65, 310984), (104, 194365), (130, 155492), (260, 77746), (520, 38873)]