42120140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23663}}^1$

素因数の和:23761

約数の個数: 24

約数和(自身を含む): 89449920

約数和(自身を除く): 47329780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 23663, 47326, 94652, 118315, 236630, 473260, 2106007, 4212014, 8424028, 10530035, 21060070, 42120140]

約数ペア:

[(1, 42120140), (2, 21060070), (4, 10530035), (5, 8424028), (10, 4212014), (20, 2106007), (89, 473260), (178, 236630), (356, 118315), (445, 94652), (890, 47326), (1780, 23663)]