31408412

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 67683168

約数和(自身を除く): 36274756

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 61, 71, 74, 98, 122, 142, 148, 196, 244, 259, 284, 427, 497, 518, 854, 994, 1036, 1708, 1813, 1988, 2257, 2627, 2989, 3479, 3626, 4331, 4514, 5254, 5978, 6958, 7252, 8662, 9028, 10508, 11956, 13916, 15799, 17324, 18389, 30317, 31598, 36778, 60634, 63196, 73556, 110593, 121268, 128723, 160247, 212219, 221186, 257446, 320494, 424438, 442372, 514892, 640988, 848876, 1121729, 2243458, 4486916, 7852103, 15704206, 31408412]

約数ペア:

[(1, 31408412), (2, 15704206), (4, 7852103), (7, 4486916), (14, 2243458), (28, 1121729), (37, 848876), (49, 640988), (61, 514892), (71, 442372), (74, 424438), (98, 320494), (122, 257446), (142, 221186), (148, 212219), (196, 160247), (244, 128723), (259, 121268), (284, 110593), (427, 73556), (497, 63196), (518, 60634), (854, 36778), (994, 31598), (1036, 30317), (1708, 18389), (1813, 17324), (1988, 15799), (2257, 13916), (2627, 11956), (2989, 10508), (3479, 9028), (3626, 8662), (4331, 7252), (4514, 6958), (5254, 5978)]