20340021880

素因数分解:

$2^3\times 5^1\times {\mathrm{508500547}}^1$

素因数の和:508500558

約数の個数: 16

約数和(自身を含む): 45765049320

約数和(自身を除く): 25425027440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508500547, 1017001094, 2034002188, 2542502735, 4068004376, 5085005470, 10170010940, 20340021880]

約数ペア:

[(1, 20340021880), (2, 10170010940), (4, 5085005470), (5, 4068004376), (8, 2542502735), (10, 2034002188), (20, 1017001094), (40, 508500547)]