20175855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19637265

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 89, 105, 119, 127, 255, 267, 357, 381, 445, 595, 623, 635, 889, 1335, 1513, 1785, 1869, 1905, 2159, 2667, 3115, 4445, 4539, 6477, 7565, 9345, 10591, 10795, 11303, 13335, 15113, 22695, 31773, 32385, 33909, 45339, 52955, 56515, 75565, 79121, 158865, 169545, 192151, 226695, 237363, 395605, 576453, 960755, 1186815, 1345057, 2882265, 4035171, 6725285, 20175855]

約数ペア:

[(1, 20175855), (3, 6725285), (5, 4035171), (7, 2882265), (15, 1345057), (17, 1186815), (21, 960755), (35, 576453), (51, 395605), (85, 237363), (89, 226695), (105, 192151), (119, 169545), (127, 158865), (255, 79121), (267, 75565), (357, 56515), (381, 52955), (445, 45339), (595, 33909), (623, 32385), (635, 31773), (889, 22695), (1335, 15113), (1513, 13335), (1785, 11303), (1869, 10795), (1905, 10591), (2159, 9345), (2667, 7565), (3115, 6477), (4445, 4539)]