20944508

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30983}}^1$

素因数の和:31013

約数の個数: 18

約数和(自身を含む): 39690504

約数和(自身を除く): 18745996

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30983, 61966, 123932, 402779, 805558, 1611116, 5236127, 10472254, 20944508]

約数ペア:

[(1, 20944508), (2, 10472254), (4, 5236127), (13, 1611116), (26, 805558), (52, 402779), (169, 123932), (338, 61966), (676, 30983)]