64627940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248569}}^1$

素因数の和:248591

約数の個数: 24

約数和(自身を含む): 146159160

約数和(自身を除く): 81531220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248569, 497138, 994276, 1242845, 2485690, 3231397, 4971380, 6462794, 12925588, 16156985, 32313970, 64627940]

約数ペア:

[(1, 64627940), (2, 32313970), (4, 16156985), (5, 12925588), (10, 6462794), (13, 4971380), (20, 3231397), (26, 2485690), (52, 1242845), (65, 994276), (130, 497138), (260, 248569)]