278148780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16981}}^1$

素因数の和:17016

約数の個数: 144

約数和(自身を含む): 1038483264

約数和(自身を除く): 760334484

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 16380, 16981, 33962, 50943, 67924, 84905, 101886, 118867, 152829, 169810, 203772, 220753, 237734, 254715, 305658, 339620, 356601, 441506, 475468, 509430, 594335, 611316, 662259, 713202, 764145, 883012, 1018860, 1069803, 1103765, 1188670, 1324518, 1426404, 1528290, 1545271, 1783005, 1986777, 2139606, 2207530, 2377340, 2649036, 3056580, 3090542, 3311295, 3566010, 3973554, 4279212, 4415060, 4635813, 5349015, 6181084, 6622590, 7132020, 7726355, 7947108, 9271626, 9933885, 10698030, 13245180, 13907439, 15452710, 18543252, 19867770, 21396060, 23179065, 27814878, 30905420, 39735540, 46358130, 55629756, 69537195, 92716260, 139074390, 278148780]

約数ペア:

[(1, 278148780), (2, 139074390), (3, 92716260), (4, 69537195), (5, 55629756), (6, 46358130), (7, 39735540), (9, 30905420), (10, 27814878), (12, 23179065), (13, 21396060), (14, 19867770), (15, 18543252), (18, 15452710), (20, 13907439), (21, 13245180), (26, 10698030), (28, 9933885), (30, 9271626), (35, 7947108), (36, 7726355), (39, 7132020), (42, 6622590), (45, 6181084), (52, 5349015), (60, 4635813), (63, 4415060), (65, 4279212), (70, 3973554), (78, 3566010), (84, 3311295), (90, 3090542), (91, 3056580), (105, 2649036), (117, 2377340), (126, 2207530), (130, 2139606), (140, 1986777), (156, 1783005), (180, 1545271), (182, 1528290), (195, 1426404), (210, 1324518), (234, 1188670), (252, 1103765), (260, 1069803), (273, 1018860), (315, 883012), (364, 764145), (390, 713202), (420, 662259), (455, 611316), (468, 594335), (546, 509430), (585, 475468), (630, 441506), (780, 356601), (819, 339620), (910, 305658), (1092, 254715), (1170, 237734), (1260, 220753), (1365, 203772), (1638, 169810), (1820, 152829), (2340, 118867), (2730, 101886), (3276, 84905), (4095, 67924), (5460, 50943), (8190, 33962), (16380, 16981)]