31686440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^2$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 73562580

約数和(自身を除く): 41876140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 139, 164, 205, 278, 328, 410, 556, 695, 820, 1112, 1390, 1640, 2780, 5560, 5699, 11398, 19321, 22796, 28495, 38642, 45592, 56990, 77284, 96605, 113980, 154568, 193210, 227960, 386420, 772840, 792161, 1584322, 3168644, 3960805, 6337288, 7921610, 15843220, 31686440]

約数ペア:

[(1, 31686440), (2, 15843220), (4, 7921610), (5, 6337288), (8, 3960805), (10, 3168644), (20, 1584322), (40, 792161), (41, 772840), (82, 386420), (139, 227960), (164, 193210), (205, 154568), (278, 113980), (328, 96605), (410, 77284), (556, 56990), (695, 45592), (820, 38642), (1112, 28495), (1390, 22796), (1640, 19321), (2780, 11398), (5560, 5699)]