28731240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{719}}^1$

素因数の和:776

約数の個数: 128

約数和(自身を含む): 98496000

約数和(自身を除く): 69764760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 540, 555, 666, 719, 740, 888, 999, 1080, 1110, 1332, 1438, 1480, 1665, 1998, 2157, 2220, 2664, 2876, 3330, 3595, 3996, 4314, 4440, 4995, 5752, 6471, 6660, 7190, 7992, 8628, 9990, 10785, 12942, 13320, 14380, 17256, 19413, 19980, 21570, 25884, 26603, 28760, 32355, 38826, 39960, 43140, 51768, 53206, 64710, 77652, 79809, 86280, 97065, 106412, 129420, 133015, 155304, 159618, 194130, 212824, 239427, 258840, 266030, 319236, 388260, 399045, 478854, 532060, 638472, 718281, 776520, 798090, 957708, 1064120, 1197135, 1436562, 1596180, 1915416, 2394270, 2873124, 3192360, 3591405, 4788540, 5746248, 7182810, 9577080, 14365620, 28731240]

約数ペア:

[(1, 28731240), (2, 14365620), (3, 9577080), (4, 7182810), (5, 5746248), (6, 4788540), (8, 3591405), (9, 3192360), (10, 2873124), (12, 2394270), (15, 1915416), (18, 1596180), (20, 1436562), (24, 1197135), (27, 1064120), (30, 957708), (36, 798090), (37, 776520), (40, 718281), (45, 638472), (54, 532060), (60, 478854), (72, 399045), (74, 388260), (90, 319236), (108, 266030), (111, 258840), (120, 239427), (135, 212824), (148, 194130), (180, 159618), (185, 155304), (216, 133015), (222, 129420), (270, 106412), (296, 97065), (333, 86280), (360, 79809), (370, 77652), (444, 64710), (540, 53206), (555, 51768), (666, 43140), (719, 39960), (740, 38826), (888, 32355), (999, 28760), (1080, 26603), (1110, 25884), (1332, 21570), (1438, 19980), (1480, 19413), (1665, 17256), (1998, 14380), (2157, 13320), (2220, 12942), (2664, 10785), (2876, 9990), (3330, 8628), (3595, 7992), (3996, 7190), (4314, 6660), (4440, 6471), (4995, 5752)]