20905290

素因数分解:

$2^1\times 3^5\times 5^1\times 7^1\times {\mathrm{1229}}^1$

素因数の和:1258

約数の個数: 96

約数和(自身を含む): 64471680

約数和(自身を除く): 43566390

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 81, 90, 105, 126, 135, 162, 189, 210, 243, 270, 315, 378, 405, 486, 567, 630, 810, 945, 1134, 1215, 1229, 1701, 1890, 2430, 2458, 2835, 3402, 3687, 5670, 6145, 7374, 8505, 8603, 11061, 12290, 17010, 17206, 18435, 22122, 25809, 33183, 36870, 43015, 51618, 55305, 66366, 77427, 86030, 99549, 110610, 129045, 154854, 165915, 199098, 232281, 258090, 298647, 331830, 387135, 464562, 497745, 597294, 696843, 774270, 995490, 1161405, 1393686, 1493235, 2090529, 2322810, 2986470, 3484215, 4181058, 6968430, 10452645, 20905290]

約数ペア:

[(1, 20905290), (2, 10452645), (3, 6968430), (5, 4181058), (6, 3484215), (7, 2986470), (9, 2322810), (10, 2090529), (14, 1493235), (15, 1393686), (18, 1161405), (21, 995490), (27, 774270), (30, 696843), (35, 597294), (42, 497745), (45, 464562), (54, 387135), (63, 331830), (70, 298647), (81, 258090), (90, 232281), (105, 199098), (126, 165915), (135, 154854), (162, 129045), (189, 110610), (210, 99549), (243, 86030), (270, 77427), (315, 66366), (378, 55305), (405, 51618), (486, 43015), (567, 36870), (630, 33183), (810, 25809), (945, 22122), (1134, 18435), (1215, 17206), (1229, 17010), (1701, 12290), (1890, 11061), (2430, 8603), (2458, 8505), (2835, 7374), (3402, 6145), (3687, 5670)]