20745465

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{557}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 15252231

約数列:

[1, 3, 5, 13, 15, 39, 65, 191, 195, 557, 573, 955, 1671, 2483, 2785, 2865, 7241, 7449, 8355, 12415, 21723, 36205, 37245, 106387, 108615, 319161, 531935, 1383031, 1595805, 4149093, 6915155, 20745465]

約数ペア:

[(1, 20745465), (3, 6915155), (5, 4149093), (13, 1595805), (15, 1383031), (39, 531935), (65, 319161), (191, 108615), (195, 106387), (557, 37245), (573, 36205), (955, 21723), (1671, 12415), (2483, 8355), (2785, 7449), (2865, 7241)]