20657565

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6653}}^1$

素因数の和:6690

約数の個数: 32

約数和(自身を含む): 38327040

約数和(自身を除く): 17669475

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6653, 19959, 33265, 59877, 99795, 153019, 179631, 299385, 459057, 765095, 898155, 1377171, 2295285, 4131513, 6885855, 20657565]

約数ペア:

[(1, 20657565), (3, 6885855), (5, 4131513), (9, 2295285), (15, 1377171), (23, 898155), (27, 765095), (45, 459057), (69, 299385), (115, 179631), (135, 153019), (207, 99795), (345, 59877), (621, 33265), (1035, 19959), (3105, 6653)]