20631260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1087}}^1$

素因数の和:1182

約数の個数: 48

約数和(自身を含む): 47341056

約数和(自身を除く): 26709796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1087, 1460, 1898, 2174, 3796, 4348, 4745, 5435, 9490, 10870, 14131, 18980, 21740, 28262, 56524, 70655, 79351, 141310, 158702, 282620, 317404, 396755, 793510, 1031563, 1587020, 2063126, 4126252, 5157815, 10315630, 20631260]

約数ペア:

[(1, 20631260), (2, 10315630), (4, 5157815), (5, 4126252), (10, 2063126), (13, 1587020), (20, 1031563), (26, 793510), (52, 396755), (65, 317404), (73, 282620), (130, 158702), (146, 141310), (260, 79351), (292, 70655), (365, 56524), (730, 28262), (949, 21740), (1087, 18980), (1460, 14131), (1898, 10870), (2174, 9490), (3796, 5435), (4348, 4745)]