18421840

素因数分解:

$2^4\times 5^1\times {\mathrm{230273}}^1$

素因数の和:230286

約数の個数: 20

約数和(自身を含む): 42830964

約数和(自身を除く): 24409124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230273, 460546, 921092, 1151365, 1842184, 2302730, 3684368, 4605460, 9210920, 18421840]

約数ペア:

[(1, 18421840), (2, 9210920), (4, 4605460), (5, 3684368), (8, 2302730), (10, 1842184), (16, 1151365), (20, 921092), (40, 460546), (80, 230273)]