18989565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{811}}^1$

素因数の和:1049

約数の個数: 32

約数和(自身を含む): 34922496

約数和(自身を除く): 15932931

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 223, 669, 811, 1115, 1561, 2433, 3345, 4055, 4683, 5677, 7805, 12165, 17031, 23415, 28385, 85155, 180853, 542559, 904265, 1265971, 2712795, 3797913, 6329855, 18989565]

約数ペア:

[(1, 18989565), (3, 6329855), (5, 3797913), (7, 2712795), (15, 1265971), (21, 904265), (35, 542559), (105, 180853), (223, 85155), (669, 28385), (811, 23415), (1115, 17031), (1561, 12165), (2433, 7805), (3345, 5677), (4055, 4683)]