78837720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:645

約数の個数: 128

約数和(自身を含む): 257826240

約数和(自身を除く): 178988520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 97, 104, 120, 130, 156, 194, 195, 260, 291, 312, 388, 390, 485, 520, 521, 582, 776, 780, 970, 1042, 1164, 1261, 1455, 1560, 1563, 1940, 2084, 2328, 2522, 2605, 2910, 3126, 3783, 3880, 4168, 5044, 5210, 5820, 6252, 6305, 6773, 7566, 7815, 10088, 10420, 11640, 12504, 12610, 13546, 15132, 15630, 18915, 20319, 20840, 25220, 27092, 30264, 31260, 33865, 37830, 40638, 50440, 50537, 54184, 62520, 67730, 75660, 81276, 101074, 101595, 135460, 151320, 151611, 162552, 202148, 203190, 252685, 270920, 303222, 404296, 406380, 505370, 606444, 656981, 758055, 812760, 1010740, 1212888, 1313962, 1516110, 1970943, 2021480, 2627924, 3032220, 3284905, 3941886, 5255848, 6064440, 6569810, 7883772, 9854715, 13139620, 15767544, 19709430, 26279240, 39418860, 78837720]

約数ペア:

[(1, 78837720), (2, 39418860), (3, 26279240), (4, 19709430), (5, 15767544), (6, 13139620), (8, 9854715), (10, 7883772), (12, 6569810), (13, 6064440), (15, 5255848), (20, 3941886), (24, 3284905), (26, 3032220), (30, 2627924), (39, 2021480), (40, 1970943), (52, 1516110), (60, 1313962), (65, 1212888), (78, 1010740), (97, 812760), (104, 758055), (120, 656981), (130, 606444), (156, 505370), (194, 406380), (195, 404296), (260, 303222), (291, 270920), (312, 252685), (388, 203190), (390, 202148), (485, 162552), (520, 151611), (521, 151320), (582, 135460), (776, 101595), (780, 101074), (970, 81276), (1042, 75660), (1164, 67730), (1261, 62520), (1455, 54184), (1560, 50537), (1563, 50440), (1940, 40638), (2084, 37830), (2328, 33865), (2522, 31260), (2605, 30264), (2910, 27092), (3126, 25220), (3783, 20840), (3880, 20319), (4168, 18915), (5044, 15630), (5210, 15132), (5820, 13546), (6252, 12610), (6305, 12504), (6773, 11640), (7566, 10420), (7815, 10088)]