80206140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27281}}^1$

素因数の和:27307

約数の個数: 72

約数和(自身を含む): 261252432

約数和(自身を除く): 181046292

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27281, 54562, 81843, 109124, 136405, 163686, 190967, 272810, 327372, 381934, 409215, 545620, 572901, 763868, 818430, 954835, 1145802, 1336769, 1636860, 1909670, 2291604, 2673538, 2864505, 3819340, 4010307, 5347076, 5729010, 6683845, 8020614, 11458020, 13367690, 16041228, 20051535, 26735380, 40103070, 80206140]

約数ペア:

[(1, 80206140), (2, 40103070), (3, 26735380), (4, 20051535), (5, 16041228), (6, 13367690), (7, 11458020), (10, 8020614), (12, 6683845), (14, 5729010), (15, 5347076), (20, 4010307), (21, 3819340), (28, 2864505), (30, 2673538), (35, 2291604), (42, 1909670), (49, 1636860), (60, 1336769), (70, 1145802), (84, 954835), (98, 818430), (105, 763868), (140, 572901), (147, 545620), (196, 409215), (210, 381934), (245, 327372), (294, 272810), (420, 190967), (490, 163686), (588, 136405), (735, 109124), (980, 81843), (1470, 54562), (2940, 27281)]