81791248

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{337}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 199165824

約数和(自身を除く): 117374576

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 197, 308, 337, 394, 616, 674, 788, 1232, 1348, 1379, 1576, 2167, 2359, 2696, 2758, 3152, 3707, 4334, 4718, 5392, 5516, 7414, 8668, 9436, 11032, 14828, 15169, 17336, 18872, 22064, 25949, 29656, 30338, 34672, 37744, 51898, 59312, 60676, 66389, 103796, 121352, 132778, 207592, 242704, 265556, 415184, 464723, 531112, 730279, 929446, 1062224, 1460558, 1858892, 2921116, 3717784, 5111953, 5842232, 7435568, 10223906, 11684464, 20447812, 40895624, 81791248]

約数ペア:

[(1, 81791248), (2, 40895624), (4, 20447812), (7, 11684464), (8, 10223906), (11, 7435568), (14, 5842232), (16, 5111953), (22, 3717784), (28, 2921116), (44, 1858892), (56, 1460558), (77, 1062224), (88, 929446), (112, 730279), (154, 531112), (176, 464723), (197, 415184), (308, 265556), (337, 242704), (394, 207592), (616, 132778), (674, 121352), (788, 103796), (1232, 66389), (1348, 60676), (1379, 59312), (1576, 51898), (2167, 37744), (2359, 34672), (2696, 30338), (2758, 29656), (3152, 25949), (3707, 22064), (4334, 18872), (4718, 17336), (5392, 15169), (5516, 14828), (7414, 11032), (8668, 9436)]