18808545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 37449216

約数和(自身を除く): 18640671

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 41, 51, 85, 105, 119, 123, 205, 255, 257, 287, 357, 595, 615, 697, 771, 861, 1285, 1435, 1785, 1799, 2091, 3485, 3855, 4305, 4369, 4879, 5397, 8995, 10455, 10537, 13107, 14637, 21845, 24395, 26985, 30583, 31611, 52685, 65535, 73185, 73759, 91749, 152915, 158055, 179129, 221277, 368795, 458745, 537387, 895645, 1106385, 1253903, 2686935, 3761709, 6269515, 18808545]

約数ペア:

[(1, 18808545), (3, 6269515), (5, 3761709), (7, 2686935), (15, 1253903), (17, 1106385), (21, 895645), (35, 537387), (41, 458745), (51, 368795), (85, 221277), (105, 179129), (119, 158055), (123, 152915), (205, 91749), (255, 73759), (257, 73185), (287, 65535), (357, 52685), (595, 31611), (615, 30583), (697, 26985), (771, 24395), (861, 21845), (1285, 14637), (1435, 13107), (1785, 10537), (1799, 10455), (2091, 8995), (3485, 5397), (3855, 4879), (4305, 4369)]