21671945

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1571}}^1$

素因数の和:1696

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 5492215

約数列:

[1, 5, 31, 89, 155, 445, 1571, 2759, 7855, 13795, 48701, 139819, 243505, 699095, 4334389, 21671945]

約数ペア:

[(1, 21671945), (5, 4334389), (31, 699095), (89, 243505), (155, 139819), (445, 48701), (1571, 13795), (2759, 7855)]