19912855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{1171}}^1$

素因数の和:1374

約数の個数: 16

約数和(自身を含む): 25315200

約数和(自身を除く): 5402345

約数列:

[1, 5, 19, 95, 179, 895, 1171, 3401, 5855, 17005, 22249, 111245, 209609, 1048045, 3982571, 19912855]

約数ペア:

[(1, 19912855), (5, 3982571), (19, 1048045), (95, 209609), (179, 111245), (895, 22249), (1171, 17005), (3401, 5855)]