81165720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 259660800

約数和(自身を除く): 178495080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 97, 114, 120, 152, 190, 194, 228, 285, 291, 367, 380, 388, 456, 485, 570, 582, 734, 760, 776, 970, 1101, 1140, 1164, 1455, 1468, 1835, 1843, 1940, 2202, 2280, 2328, 2910, 2936, 3670, 3686, 3880, 4404, 5505, 5529, 5820, 6973, 7340, 7372, 8808, 9215, 11010, 11058, 11640, 13946, 14680, 14744, 18430, 20919, 22020, 22116, 27645, 27892, 34865, 35599, 36860, 41838, 44040, 44232, 55290, 55784, 69730, 71198, 73720, 83676, 104595, 106797, 110580, 139460, 142396, 167352, 177995, 209190, 213594, 221160, 278920, 284792, 355990, 418380, 427188, 533985, 676381, 711980, 836760, 854376, 1067970, 1352762, 1423960, 2029143, 2135940, 2705524, 3381905, 4058286, 4271880, 5411048, 6763810, 8116572, 10145715, 13527620, 16233144, 20291430, 27055240, 40582860, 81165720]

約数ペア:

[(1, 81165720), (2, 40582860), (3, 27055240), (4, 20291430), (5, 16233144), (6, 13527620), (8, 10145715), (10, 8116572), (12, 6763810), (15, 5411048), (19, 4271880), (20, 4058286), (24, 3381905), (30, 2705524), (38, 2135940), (40, 2029143), (57, 1423960), (60, 1352762), (76, 1067970), (95, 854376), (97, 836760), (114, 711980), (120, 676381), (152, 533985), (190, 427188), (194, 418380), (228, 355990), (285, 284792), (291, 278920), (367, 221160), (380, 213594), (388, 209190), (456, 177995), (485, 167352), (570, 142396), (582, 139460), (734, 110580), (760, 106797), (776, 104595), (970, 83676), (1101, 73720), (1140, 71198), (1164, 69730), (1455, 55784), (1468, 55290), (1835, 44232), (1843, 44040), (1940, 41838), (2202, 36860), (2280, 35599), (2328, 34865), (2910, 27892), (2936, 27645), (3670, 22116), (3686, 22020), (3880, 20919), (4404, 18430), (5505, 14744), (5529, 14680), (5820, 13946), (6973, 11640), (7340, 11058), (7372, 11010), (8808, 9215)]