21504015

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12253}}^1$

素因数の和:12280

約数の個数: 32

約数和(自身を含む): 41173440

約数和(自身を除く): 19669425

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12253, 36759, 61265, 110277, 159289, 183795, 330831, 477867, 551385, 796445, 1433601, 1654155, 2389335, 4300803, 7168005, 21504015]

約数ペア:

[(1, 21504015), (3, 7168005), (5, 4300803), (9, 2389335), (13, 1654155), (15, 1433601), (27, 796445), (39, 551385), (45, 477867), (65, 330831), (117, 183795), (135, 159289), (195, 110277), (351, 61265), (585, 36759), (1755, 12253)]