257108565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{983}}^1$

素因数の和:1098

約数の個数: 64

約数和(自身を含む): 489701376

約数和(自身を除く): 232592811

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 53, 105, 141, 159, 235, 265, 329, 371, 705, 795, 983, 987, 1113, 1645, 1855, 2491, 2949, 4915, 4935, 5565, 6881, 7473, 12455, 14745, 17437, 20643, 34405, 37365, 46201, 52099, 52311, 87185, 103215, 138603, 156297, 231005, 260495, 261555, 323407, 364693, 693015, 781485, 970221, 1094079, 1617035, 1823465, 2448653, 4851105, 5470395, 7345959, 12243265, 17140571, 36729795, 51421713, 85702855, 257108565]

約数ペア:

[(1, 257108565), (3, 85702855), (5, 51421713), (7, 36729795), (15, 17140571), (21, 12243265), (35, 7345959), (47, 5470395), (53, 4851105), (105, 2448653), (141, 1823465), (159, 1617035), (235, 1094079), (265, 970221), (329, 781485), (371, 693015), (705, 364693), (795, 323407), (983, 261555), (987, 260495), (1113, 231005), (1645, 156297), (1855, 138603), (2491, 103215), (2949, 87185), (4915, 52311), (4935, 52099), (5565, 46201), (6881, 37365), (7473, 34405), (12455, 20643), (14745, 17437)]