21945720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{919}}^1$

素因数の和:1132

約数の個数: 64

約数和(自身を含む): 66240000

約数和(自身を除く): 44294280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 199, 398, 597, 796, 919, 995, 1194, 1592, 1838, 1990, 2388, 2757, 2985, 3676, 3980, 4595, 4776, 5514, 5970, 7352, 7960, 9190, 11028, 11940, 13785, 18380, 22056, 23880, 27570, 36760, 55140, 110280, 182881, 365762, 548643, 731524, 914405, 1097286, 1463048, 1828810, 2194572, 2743215, 3657620, 4389144, 5486430, 7315240, 10972860, 21945720]

約数ペア:

[(1, 21945720), (2, 10972860), (3, 7315240), (4, 5486430), (5, 4389144), (6, 3657620), (8, 2743215), (10, 2194572), (12, 1828810), (15, 1463048), (20, 1097286), (24, 914405), (30, 731524), (40, 548643), (60, 365762), (120, 182881), (199, 110280), (398, 55140), (597, 36760), (796, 27570), (919, 23880), (995, 22056), (1194, 18380), (1592, 13785), (1838, 11940), (1990, 11028), (2388, 9190), (2757, 7960), (2985, 7352), (3676, 5970), (3980, 5514), (4595, 4776)]