20018720

素因数分解:

$2^5\times 5^1\times {\mathrm{125117}}^1$

素因数の和:125132

約数の個数: 24

約数和(自身を含む): 47294604

約数和(自身を除く): 27275884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 125117, 250234, 500468, 625585, 1000936, 1251170, 2001872, 2502340, 4003744, 5004680, 10009360, 20018720]

約数ペア:

[(1, 20018720), (2, 10009360), (4, 5004680), (5, 4003744), (8, 2502340), (10, 2001872), (16, 1251170), (20, 1000936), (32, 625585), (40, 500468), (80, 250234), (160, 125117)]