78988980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:494

約数の個数: 144

約数和(自身を含む): 261769536

約数和(自身を除く): 182780556

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 67, 70, 84, 98, 105, 134, 140, 147, 196, 201, 210, 245, 268, 294, 335, 401, 402, 420, 469, 490, 588, 670, 735, 802, 804, 938, 980, 1005, 1203, 1340, 1407, 1470, 1604, 1876, 2005, 2010, 2345, 2406, 2807, 2814, 2940, 3283, 4010, 4020, 4690, 4812, 5614, 5628, 6015, 6566, 7035, 8020, 8421, 9380, 9849, 11228, 12030, 13132, 14035, 14070, 16415, 16842, 19649, 19698, 24060, 26867, 28070, 28140, 32830, 33684, 39298, 39396, 42105, 49245, 53734, 56140, 58947, 65660, 78596, 80601, 84210, 98245, 98490, 107468, 117894, 134335, 161202, 168420, 188069, 196490, 196980, 235788, 268670, 294735, 322404, 376138, 392980, 403005, 537340, 564207, 589470, 752276, 806010, 940345, 1128414, 1178940, 1316483, 1612020, 1880690, 2256828, 2632966, 2821035, 3761380, 3949449, 5265932, 5642070, 6582415, 7898898, 11284140, 13164830, 15797796, 19747245, 26329660, 39494490, 78988980]

約数ペア:

[(1, 78988980), (2, 39494490), (3, 26329660), (4, 19747245), (5, 15797796), (6, 13164830), (7, 11284140), (10, 7898898), (12, 6582415), (14, 5642070), (15, 5265932), (20, 3949449), (21, 3761380), (28, 2821035), (30, 2632966), (35, 2256828), (42, 1880690), (49, 1612020), (60, 1316483), (67, 1178940), (70, 1128414), (84, 940345), (98, 806010), (105, 752276), (134, 589470), (140, 564207), (147, 537340), (196, 403005), (201, 392980), (210, 376138), (245, 322404), (268, 294735), (294, 268670), (335, 235788), (401, 196980), (402, 196490), (420, 188069), (469, 168420), (490, 161202), (588, 134335), (670, 117894), (735, 107468), (802, 98490), (804, 98245), (938, 84210), (980, 80601), (1005, 78596), (1203, 65660), (1340, 58947), (1407, 56140), (1470, 53734), (1604, 49245), (1876, 42105), (2005, 39396), (2010, 39298), (2345, 33684), (2406, 32830), (2807, 28140), (2814, 28070), (2940, 26867), (3283, 24060), (4010, 19698), (4020, 19649), (4690, 16842), (4812, 16415), (5614, 14070), (5628, 14035), (6015, 13132), (6566, 12030), (7035, 11228), (8020, 9849), (8421, 9380)]