20880016

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16519}}^1$

素因数の和:16606

約数の個数: 20

約数和(自身を含む): 40969600

約数和(自身を除く): 20089584

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16519, 33038, 66076, 132152, 264304, 1305001, 2610002, 5220004, 10440008, 20880016]

約数ペア:

[(1, 20880016), (2, 10440008), (4, 5220004), (8, 2610002), (16, 1305001), (79, 264304), (158, 132152), (316, 66076), (632, 33038), (1264, 16519)]