20740915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5231}}^1$

素因数の和:5310

約数の個数: 16

約数和(自身を含む): 27248256

約数和(自身を除く): 6507341

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5231, 26155, 68003, 319091, 340015, 1595455, 4148183, 20740915]

約数ペア:

[(1, 20740915), (5, 4148183), (13, 1595455), (61, 340015), (65, 319091), (305, 68003), (793, 26155), (3965, 5231)]