20463740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{487}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 47222784

約数和(自身を除く): 26759044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 191, 220, 382, 487, 764, 955, 974, 1910, 1948, 2101, 2435, 3820, 4202, 4870, 5357, 8404, 9740, 10505, 10714, 21010, 21428, 26785, 42020, 53570, 93017, 107140, 186034, 372068, 465085, 930170, 1023187, 1860340, 2046374, 4092748, 5115935, 10231870, 20463740]

約数ペア:

[(1, 20463740), (2, 10231870), (4, 5115935), (5, 4092748), (10, 2046374), (11, 1860340), (20, 1023187), (22, 930170), (44, 465085), (55, 372068), (110, 186034), (191, 107140), (220, 93017), (382, 53570), (487, 42020), (764, 26785), (955, 21428), (974, 21010), (1910, 10714), (1948, 10505), (2101, 9740), (2435, 8404), (3820, 5357), (4202, 4870)]