320790780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2789}}^1$

素因数の和:2881

約数の個数: 120

約数和(自身を含む): 1020872160

約数和(自身を除く): 700081380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 71, 81, 90, 108, 135, 142, 162, 180, 213, 270, 284, 324, 355, 405, 426, 540, 639, 710, 810, 852, 1065, 1278, 1420, 1620, 1917, 2130, 2556, 2789, 3195, 3834, 4260, 5578, 5751, 6390, 7668, 8367, 9585, 11156, 11502, 12780, 13945, 16734, 19170, 23004, 25101, 27890, 28755, 33468, 38340, 41835, 50202, 55780, 57510, 75303, 83670, 100404, 115020, 125505, 150606, 167340, 198019, 225909, 251010, 301212, 376515, 396038, 451818, 502020, 594057, 753030, 792076, 903636, 990095, 1129545, 1188114, 1506060, 1782171, 1980190, 2259090, 2376228, 2970285, 3564342, 3960380, 4518180, 5346513, 5940570, 7128684, 8910855, 10693026, 11881140, 16039539, 17821710, 21386052, 26732565, 32079078, 35643420, 53465130, 64158156, 80197695, 106930260, 160395390, 320790780]

約数ペア:

[(1, 320790780), (2, 160395390), (3, 106930260), (4, 80197695), (5, 64158156), (6, 53465130), (9, 35643420), (10, 32079078), (12, 26732565), (15, 21386052), (18, 17821710), (20, 16039539), (27, 11881140), (30, 10693026), (36, 8910855), (45, 7128684), (54, 5940570), (60, 5346513), (71, 4518180), (81, 3960380), (90, 3564342), (108, 2970285), (135, 2376228), (142, 2259090), (162, 1980190), (180, 1782171), (213, 1506060), (270, 1188114), (284, 1129545), (324, 990095), (355, 903636), (405, 792076), (426, 753030), (540, 594057), (639, 502020), (710, 451818), (810, 396038), (852, 376515), (1065, 301212), (1278, 251010), (1420, 225909), (1620, 198019), (1917, 167340), (2130, 150606), (2556, 125505), (2789, 115020), (3195, 100404), (3834, 83670), (4260, 75303), (5578, 57510), (5751, 55780), (6390, 50202), (7668, 41835), (8367, 38340), (9585, 33468), (11156, 28755), (11502, 27890), (12780, 25101), (13945, 23004), (16734, 19170)]