20732751

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:392

約数の個数: 36

約数和(自身を含む): 33286968

約数和(自身を除く): 12554217

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 169, 317, 387, 507, 559, 951, 1521, 1677, 2853, 4121, 5031, 7267, 12363, 13631, 21801, 37089, 40893, 53573, 65403, 122679, 160719, 177203, 482157, 531609, 1594827, 2303639, 6910917, 20732751]

約数ペア:

[(1, 20732751), (3, 6910917), (9, 2303639), (13, 1594827), (39, 531609), (43, 482157), (117, 177203), (129, 160719), (169, 122679), (317, 65403), (387, 53573), (507, 40893), (559, 37089), (951, 21801), (1521, 13631), (1677, 12363), (2853, 7267), (4121, 5031)]