79990020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:666

約数の個数: 144

約数和(自身を含む): 268894080

約数和(自身を除く): 188904060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 71, 90, 99, 110, 132, 142, 165, 180, 198, 213, 220, 284, 330, 355, 396, 426, 495, 569, 639, 660, 710, 781, 852, 990, 1065, 1138, 1278, 1420, 1562, 1707, 1980, 2130, 2276, 2343, 2556, 2845, 3124, 3195, 3414, 3905, 4260, 4686, 5121, 5690, 6259, 6390, 6828, 7029, 7810, 8535, 9372, 10242, 11380, 11715, 12518, 12780, 14058, 15620, 17070, 18777, 20484, 23430, 25036, 25605, 28116, 31295, 34140, 35145, 37554, 40399, 46860, 51210, 56331, 62590, 70290, 75108, 80798, 93885, 102420, 112662, 121197, 125180, 140580, 161596, 187770, 201995, 225324, 242394, 281655, 363591, 375540, 403990, 444389, 484788, 563310, 605985, 727182, 807980, 888778, 1126620, 1211970, 1333167, 1454364, 1777556, 1817955, 2221945, 2423940, 2666334, 3635910, 3999501, 4443890, 5332668, 6665835, 7271820, 7999002, 8887780, 13331670, 15998004, 19997505, 26663340, 39995010, 79990020]

約数ペア:

[(1, 79990020), (2, 39995010), (3, 26663340), (4, 19997505), (5, 15998004), (6, 13331670), (9, 8887780), (10, 7999002), (11, 7271820), (12, 6665835), (15, 5332668), (18, 4443890), (20, 3999501), (22, 3635910), (30, 2666334), (33, 2423940), (36, 2221945), (44, 1817955), (45, 1777556), (55, 1454364), (60, 1333167), (66, 1211970), (71, 1126620), (90, 888778), (99, 807980), (110, 727182), (132, 605985), (142, 563310), (165, 484788), (180, 444389), (198, 403990), (213, 375540), (220, 363591), (284, 281655), (330, 242394), (355, 225324), (396, 201995), (426, 187770), (495, 161596), (569, 140580), (639, 125180), (660, 121197), (710, 112662), (781, 102420), (852, 93885), (990, 80798), (1065, 75108), (1138, 70290), (1278, 62590), (1420, 56331), (1562, 51210), (1707, 46860), (1980, 40399), (2130, 37554), (2276, 35145), (2343, 34140), (2556, 31295), (2845, 28116), (3124, 25605), (3195, 25036), (3414, 23430), (3905, 20484), (4260, 18777), (4686, 17070), (5121, 15620), (5690, 14058), (6259, 12780), (6390, 12518), (6828, 11715), (7029, 11380), (7810, 10242), (8535, 9372)]