20905533

素因数分解:

$3^7\times {\mathrm{11}}^2\times {\mathrm{79}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 34899200

約数和(自身を除く): 13993667

約数列:

[1, 3, 9, 11, 27, 33, 79, 81, 99, 121, 237, 243, 297, 363, 711, 729, 869, 891, 1089, 2133, 2187, 2607, 2673, 3267, 6399, 7821, 8019, 9559, 9801, 19197, 23463, 24057, 28677, 29403, 57591, 70389, 86031, 88209, 172773, 211167, 258093, 264627, 633501, 774279, 1900503, 2322837, 6968511, 20905533]

約数ペア:

[(1, 20905533), (3, 6968511), (9, 2322837), (11, 1900503), (27, 774279), (33, 633501), (79, 264627), (81, 258093), (99, 211167), (121, 172773), (237, 88209), (243, 86031), (297, 70389), (363, 57591), (711, 29403), (729, 28677), (869, 24057), (891, 23463), (1089, 19197), (2133, 9801), (2187, 9559), (2607, 8019), (2673, 7821), (3267, 6399)]