21836415

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4507}}^1$

素因数の和:4551

約数の個数: 32

約数和(自身を含む): 38949120

約数和(自身を除く): 17112705

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4507, 4845, 13521, 22535, 67605, 76619, 85633, 229857, 256899, 383095, 428165, 1149285, 1284495, 1455761, 4367283, 7278805, 21836415]

約数ペア:

[(1, 21836415), (3, 7278805), (5, 4367283), (15, 1455761), (17, 1284495), (19, 1149285), (51, 428165), (57, 383095), (85, 256899), (95, 229857), (255, 85633), (285, 76619), (323, 67605), (969, 22535), (1615, 13521), (4507, 4845)]