20840792

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 47476800

約数和(自身を除く): 26636008

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 41, 56, 58, 82, 116, 164, 203, 232, 287, 313, 328, 406, 574, 626, 812, 1148, 1189, 1252, 1624, 2191, 2296, 2378, 2504, 4382, 4756, 8323, 8764, 9077, 9512, 12833, 16646, 17528, 18154, 25666, 33292, 36308, 51332, 63539, 66584, 72616, 89831, 102664, 127078, 179662, 254156, 359324, 372157, 508312, 718648, 744314, 1488628, 2605099, 2977256, 5210198, 10420396, 20840792]

約数ペア:

[(1, 20840792), (2, 10420396), (4, 5210198), (7, 2977256), (8, 2605099), (14, 1488628), (28, 744314), (29, 718648), (41, 508312), (56, 372157), (58, 359324), (82, 254156), (116, 179662), (164, 127078), (203, 102664), (232, 89831), (287, 72616), (313, 66584), (328, 63539), (406, 51332), (574, 36308), (626, 33292), (812, 25666), (1148, 18154), (1189, 17528), (1252, 16646), (1624, 12833), (2191, 9512), (2296, 9077), (2378, 8764), (2504, 8323), (4382, 4756)]