18439660

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1123}}^1$

素因数の和:1953

約数の個数: 24

約数和(自身を含む): 38804976

約数和(自身を除く): 20365316

約数列:

[1, 2, 4, 5, 10, 20, 821, 1123, 1642, 2246, 3284, 4105, 4492, 5615, 8210, 11230, 16420, 22460, 921983, 1843966, 3687932, 4609915, 9219830, 18439660]

約数ペア:

[(1, 18439660), (2, 9219830), (4, 4609915), (5, 3687932), (10, 1843966), (20, 921983), (821, 22460), (1123, 16420), (1642, 11230), (2246, 8210), (3284, 5615), (4105, 4492)]