20646225

素因数分解:

$3^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 38539200

約数和(自身を除く): 17892975

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 135, 219, 225, 365, 419, 657, 675, 1095, 1257, 1825, 1971, 2095, 3285, 3771, 5475, 6285, 9855, 10475, 11313, 16425, 18855, 30587, 31425, 49275, 56565, 91761, 94275, 152935, 275283, 282825, 458805, 764675, 825849, 1376415, 2294025, 4129245, 6882075, 20646225]

約数ペア:

[(1, 20646225), (3, 6882075), (5, 4129245), (9, 2294025), (15, 1376415), (25, 825849), (27, 764675), (45, 458805), (73, 282825), (75, 275283), (135, 152935), (219, 94275), (225, 91761), (365, 56565), (419, 49275), (657, 31425), (675, 30587), (1095, 18855), (1257, 16425), (1825, 11313), (1971, 10475), (2095, 9855), (3285, 6285), (3771, 5475)]