28765280

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 96

約数和(自身を含む): 72049824

約数和(自身を除く): 43284544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 43, 74, 80, 86, 113, 148, 160, 172, 185, 215, 226, 296, 344, 370, 430, 452, 565, 592, 688, 740, 860, 904, 1130, 1184, 1376, 1480, 1591, 1720, 1808, 2260, 2960, 3182, 3440, 3616, 4181, 4520, 4859, 5920, 6364, 6880, 7955, 8362, 9040, 9718, 12728, 15910, 16724, 18080, 19436, 20905, 24295, 25456, 31820, 33448, 38872, 41810, 48590, 50912, 63640, 66896, 77744, 83620, 97180, 127280, 133792, 155488, 167240, 179783, 194360, 254560, 334480, 359566, 388720, 668960, 719132, 777440, 898915, 1438264, 1797830, 2876528, 3595660, 5753056, 7191320, 14382640, 28765280]

約数ペア:

[(1, 28765280), (2, 14382640), (4, 7191320), (5, 5753056), (8, 3595660), (10, 2876528), (16, 1797830), (20, 1438264), (32, 898915), (37, 777440), (40, 719132), (43, 668960), (74, 388720), (80, 359566), (86, 334480), (113, 254560), (148, 194360), (160, 179783), (172, 167240), (185, 155488), (215, 133792), (226, 127280), (296, 97180), (344, 83620), (370, 77744), (430, 66896), (452, 63640), (565, 50912), (592, 48590), (688, 41810), (740, 38872), (860, 33448), (904, 31820), (1130, 25456), (1184, 24295), (1376, 20905), (1480, 19436), (1591, 18080), (1720, 16724), (1808, 15910), (2260, 12728), (2960, 9718), (3182, 9040), (3440, 8362), (3616, 7955), (4181, 6880), (4520, 6364), (4859, 5920)]