51020140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28663}}^1$

素因数の和:28761

約数の個数: 24

約数和(自身を含む): 108349920

約数和(自身を除く): 57329780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 28663, 57326, 114652, 143315, 286630, 573260, 2551007, 5102014, 10204028, 12755035, 25510070, 51020140]

約数ペア:

[(1, 51020140), (2, 25510070), (4, 12755035), (5, 10204028), (10, 5102014), (20, 2551007), (89, 573260), (178, 286630), (356, 143315), (445, 114652), (890, 57326), (1780, 28663)]