218518420

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{13883}}^1$

素因数の和:14679

約数の個数: 24

約数和(自身を含む): 459504864

約数和(自身を除く): 240986444

約数列:

[1, 2, 4, 5, 10, 20, 787, 1574, 3148, 3935, 7870, 13883, 15740, 27766, 55532, 69415, 138830, 277660, 10925921, 21851842, 43703684, 54629605, 109259210, 218518420]

約数ペア:

[(1, 218518420), (2, 109259210), (4, 54629605), (5, 43703684), (10, 21851842), (20, 10925921), (787, 277660), (1574, 138830), (3148, 69415), (3935, 55532), (7870, 27766), (13883, 15740)]