20269985

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{3251}}^1$

素因数の和:3328

約数の個数: 16

約数和(自身を含む): 25755840

約数和(自身を除く): 5485855

約数列:

[1, 5, 29, 43, 145, 215, 1247, 3251, 6235, 16255, 94279, 139793, 471395, 698965, 4053997, 20269985]

約数ペア:

[(1, 20269985), (5, 4053997), (29, 698965), (43, 471395), (145, 139793), (215, 94279), (1247, 16255), (3251, 6235)]