12788620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{487}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 29268288

約数和(自身を除く): 16479668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 487, 505, 974, 1010, 1313, 1948, 2020, 2435, 2626, 4870, 5252, 6331, 6565, 9740, 12662, 13130, 25324, 26260, 31655, 49187, 63310, 98374, 126620, 196748, 245935, 491870, 639431, 983740, 1278862, 2557724, 3197155, 6394310, 12788620]

約数ペア:

[(1, 12788620), (2, 6394310), (4, 3197155), (5, 2557724), (10, 1278862), (13, 983740), (20, 639431), (26, 491870), (52, 245935), (65, 196748), (101, 126620), (130, 98374), (202, 63310), (260, 49187), (404, 31655), (487, 26260), (505, 25324), (974, 13130), (1010, 12662), (1313, 9740), (1948, 6565), (2020, 6331), (2435, 5252), (2626, 4870)]