19921355

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1\times {\mathrm{419}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 24706080

約数和(自身を除く): 4784725

約数列:

[1, 5, 37, 185, 257, 419, 1285, 2095, 9509, 15503, 47545, 77515, 107683, 538415, 3984271, 19921355]

約数ペア:

[(1, 19921355), (5, 3984271), (37, 538415), (185, 107683), (257, 77515), (419, 47545), (1285, 15503), (2095, 9509)]