279381920

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 720679680

約数和(自身を除く): 441297760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 79, 80, 92, 115, 124, 155, 158, 160, 184, 230, 248, 310, 316, 368, 395, 460, 496, 620, 632, 713, 736, 790, 920, 961, 992, 1240, 1264, 1426, 1580, 1817, 1840, 1922, 2449, 2480, 2528, 2852, 3160, 3565, 3634, 3680, 3844, 4805, 4898, 4960, 5704, 6320, 7130, 7268, 7688, 9085, 9610, 9796, 11408, 12245, 12640, 14260, 14536, 15376, 18170, 19220, 19592, 22103, 22816, 24490, 28520, 29072, 30752, 36340, 38440, 39184, 44206, 48980, 56327, 57040, 58144, 72680, 75919, 76880, 78368, 88412, 97960, 110515, 112654, 114080, 145360, 151838, 153760, 176824, 195920, 221030, 225308, 281635, 290720, 303676, 353648, 379595, 391840, 442060, 450616, 563270, 607352, 707296, 759190, 884120, 901232, 1126540, 1214704, 1518380, 1746137, 1768240, 1802464, 2253080, 2429408, 3036760, 3492274, 3536480, 4506160, 6073520, 6984548, 8730685, 9012320, 12147040, 13969096, 17461370, 27938192, 34922740, 55876384, 69845480, 139690960, 279381920]

約数ペア:

[(1, 279381920), (2, 139690960), (4, 69845480), (5, 55876384), (8, 34922740), (10, 27938192), (16, 17461370), (20, 13969096), (23, 12147040), (31, 9012320), (32, 8730685), (40, 6984548), (46, 6073520), (62, 4506160), (79, 3536480), (80, 3492274), (92, 3036760), (115, 2429408), (124, 2253080), (155, 1802464), (158, 1768240), (160, 1746137), (184, 1518380), (230, 1214704), (248, 1126540), (310, 901232), (316, 884120), (368, 759190), (395, 707296), (460, 607352), (496, 563270), (620, 450616), (632, 442060), (713, 391840), (736, 379595), (790, 353648), (920, 303676), (961, 290720), (992, 281635), (1240, 225308), (1264, 221030), (1426, 195920), (1580, 176824), (1817, 153760), (1840, 151838), (1922, 145360), (2449, 114080), (2480, 112654), (2528, 110515), (2852, 97960), (3160, 88412), (3565, 78368), (3634, 76880), (3680, 75919), (3844, 72680), (4805, 58144), (4898, 57040), (4960, 56327), (5704, 48980), (6320, 44206), (7130, 39184), (7268, 38440), (7688, 36340), (9085, 30752), (9610, 29072), (9796, 28520), (11408, 24490), (12245, 22816), (12640, 22103), (14260, 19592), (14536, 19220), (15376, 18170)]