81193940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99017}}^1$

素因数の和:99067

約数の個数: 24

約数和(自身を含む): 174667752

約数和(自身を除く): 93473812

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99017, 198034, 396068, 495085, 990170, 1980340, 4059697, 8119394, 16238788, 20298485, 40596970, 81193940]

約数ペア:

[(1, 81193940), (2, 40596970), (4, 20298485), (5, 16238788), (10, 8119394), (20, 4059697), (41, 1980340), (82, 990170), (164, 495085), (205, 396068), (410, 198034), (820, 99017)]