81378720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1823}}^1$

素因数の和:1875

約数の個数: 144

約数和(自身を含む): 286820352

約数和(自身を除く): 205441632

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 240, 248, 279, 288, 310, 360, 372, 465, 480, 496, 558, 620, 720, 744, 930, 992, 1116, 1240, 1395, 1440, 1488, 1823, 1860, 2232, 2480, 2790, 2976, 3646, 3720, 4464, 4960, 5469, 5580, 7292, 7440, 8928, 9115, 10938, 11160, 14584, 14880, 16407, 18230, 21876, 22320, 27345, 29168, 32814, 36460, 43752, 44640, 54690, 56513, 58336, 65628, 72920, 82035, 87504, 109380, 113026, 131256, 145840, 164070, 169539, 175008, 218760, 226052, 262512, 282565, 291680, 328140, 339078, 437520, 452104, 508617, 525024, 565130, 656280, 678156, 847695, 875040, 904208, 1017234, 1130260, 1312560, 1356312, 1695390, 1808416, 2034468, 2260520, 2543085, 2625120, 2712624, 3390780, 4068936, 4521040, 5086170, 5425248, 6781560, 8137872, 9042080, 10172340, 13563120, 16275744, 20344680, 27126240, 40689360, 81378720]

約数ペア:

[(1, 81378720), (2, 40689360), (3, 27126240), (4, 20344680), (5, 16275744), (6, 13563120), (8, 10172340), (9, 9042080), (10, 8137872), (12, 6781560), (15, 5425248), (16, 5086170), (18, 4521040), (20, 4068936), (24, 3390780), (30, 2712624), (31, 2625120), (32, 2543085), (36, 2260520), (40, 2034468), (45, 1808416), (48, 1695390), (60, 1356312), (62, 1312560), (72, 1130260), (80, 1017234), (90, 904208), (93, 875040), (96, 847695), (120, 678156), (124, 656280), (144, 565130), (155, 525024), (160, 508617), (180, 452104), (186, 437520), (240, 339078), (248, 328140), (279, 291680), (288, 282565), (310, 262512), (360, 226052), (372, 218760), (465, 175008), (480, 169539), (496, 164070), (558, 145840), (620, 131256), (720, 113026), (744, 109380), (930, 87504), (992, 82035), (1116, 72920), (1240, 65628), (1395, 58336), (1440, 56513), (1488, 54690), (1823, 44640), (1860, 43752), (2232, 36460), (2480, 32814), (2790, 29168), (2976, 27345), (3646, 22320), (3720, 21876), (4464, 18230), (4960, 16407), (5469, 14880), (5580, 14584), (7292, 11160), (7440, 10938), (8928, 9115)]