20742568

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{223}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 49029120

約数和(自身を除く): 28286552

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 151, 154, 223, 302, 308, 446, 604, 616, 892, 1057, 1208, 1561, 1661, 1784, 2114, 2453, 3122, 3322, 4228, 4906, 6244, 6644, 8456, 9812, 11627, 12488, 13288, 17171, 19624, 23254, 33673, 34342, 46508, 67346, 68684, 93016, 134692, 137368, 235711, 269384, 370403, 471422, 740806, 942844, 1481612, 1885688, 2592821, 2963224, 5185642, 10371284, 20742568]

約数ペア:

[(1, 20742568), (2, 10371284), (4, 5185642), (7, 2963224), (8, 2592821), (11, 1885688), (14, 1481612), (22, 942844), (28, 740806), (44, 471422), (56, 370403), (77, 269384), (88, 235711), (151, 137368), (154, 134692), (223, 93016), (302, 68684), (308, 67346), (446, 46508), (604, 34342), (616, 33673), (892, 23254), (1057, 19624), (1208, 17171), (1561, 13288), (1661, 12488), (1784, 11627), (2114, 9812), (2453, 8456), (3122, 6644), (3322, 6244), (4228, 4906)]