21243735

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4253}}^1$

素因数の和:4304

約数の個数: 32

約数和(自身を含む): 38796480

約数和(自身を除く): 17552745

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4253, 4995, 12759, 21265, 38277, 63795, 114831, 157361, 191385, 472083, 574155, 786805, 1416249, 2360415, 4248747, 7081245, 21243735]

約数ペア:

[(1, 21243735), (3, 7081245), (5, 4248747), (9, 2360415), (15, 1416249), (27, 786805), (37, 574155), (45, 472083), (111, 191385), (135, 157361), (185, 114831), (333, 63795), (555, 38277), (999, 21265), (1665, 12759), (4253, 4995)]