128907220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{495797}}^1$

素因数の和:495819

約数の個数: 24

約数和(自身を含む): 291529224

約数和(自身を除く): 162622004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 495797, 991594, 1983188, 2478985, 4957970, 6445361, 9915940, 12890722, 25781444, 32226805, 64453610, 128907220]

約数ペア:

[(1, 128907220), (2, 64453610), (4, 32226805), (5, 25781444), (10, 12890722), (13, 9915940), (20, 6445361), (26, 4957970), (52, 2478985), (65, 1983188), (130, 991594), (260, 495797)]