31361180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 68796000

約数和(自身を除く): 37434820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 389, 556, 580, 695, 778, 1390, 1556, 1945, 2780, 3890, 4031, 7780, 8062, 11281, 16124, 20155, 22562, 40310, 45124, 54071, 56405, 80620, 108142, 112810, 216284, 225620, 270355, 540710, 1081420, 1568059, 3136118, 6272236, 7840295, 15680590, 31361180]

約数ペア:

[(1, 31361180), (2, 15680590), (4, 7840295), (5, 6272236), (10, 3136118), (20, 1568059), (29, 1081420), (58, 540710), (116, 270355), (139, 225620), (145, 216284), (278, 112810), (290, 108142), (389, 80620), (556, 56405), (580, 54071), (695, 45124), (778, 40310), (1390, 22562), (1556, 20155), (1945, 16124), (2780, 11281), (3890, 8062), (4031, 7780)]