39720790

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{10211}}^1$

素因数の和:10607

約数の個数: 16

約数和(自身を含む): 71688240

約数和(自身を除く): 31967450

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 10211, 20422, 51055, 102110, 3972079, 7944158, 19860395, 39720790]

約数ペア:

[(1, 39720790), (2, 19860395), (5, 7944158), (10, 3972079), (389, 102110), (778, 51055), (1945, 20422), (3890, 10211)]