20304765

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{569}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 38591280

約数和(自身を除く): 18286515

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 61, 65, 117, 183, 195, 305, 549, 569, 585, 793, 915, 1707, 2379, 2745, 2845, 3965, 5121, 7137, 7397, 8535, 11895, 22191, 25605, 34709, 35685, 36985, 66573, 104127, 110955, 173545, 312381, 332865, 451217, 520635, 1353651, 1561905, 2256085, 4060953, 6768255, 20304765]

約数ペア:

[(1, 20304765), (3, 6768255), (5, 4060953), (9, 2256085), (13, 1561905), (15, 1353651), (39, 520635), (45, 451217), (61, 332865), (65, 312381), (117, 173545), (183, 110955), (195, 104127), (305, 66573), (549, 36985), (569, 35685), (585, 34709), (793, 25605), (915, 22191), (1707, 11895), (2379, 8535), (2745, 7397), (2845, 7137), (3965, 5121)]