20654595

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3923}}^1$

素因数の和:3953

約数の個数: 40

約数和(自身を含む): 39883536

約数和(自身を除く): 19228941

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 3923, 5265, 11769, 19615, 35307, 50999, 58845, 105921, 152997, 176535, 254995, 317763, 458991, 529605, 764985, 1376973, 1588815, 2294955, 4130919, 6884865, 20654595]

約数ペア:

[(1, 20654595), (3, 6884865), (5, 4130919), (9, 2294955), (13, 1588815), (15, 1376973), (27, 764985), (39, 529605), (45, 458991), (65, 317763), (81, 254995), (117, 176535), (135, 152997), (195, 105921), (351, 58845), (405, 50999), (585, 35307), (1053, 19615), (1755, 11769), (3923, 5265)]