21241665

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15227}}^1$

素因数の和:15269

約数の個数: 24

約数和(自身を含む): 38009088

約数和(自身を除く): 16767423

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15227, 45681, 76135, 137043, 228405, 472037, 685215, 1416111, 2360185, 4248333, 7080555, 21241665]

約数ペア:

[(1, 21241665), (3, 7080555), (5, 4248333), (9, 2360185), (15, 1416111), (31, 685215), (45, 472037), (93, 228405), (155, 137043), (279, 76135), (465, 45681), (1395, 15227)]