515151

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:80

約数の個数: 48

約数和(自身を含む): 995904

約数和(自身を除く): 480753

約数列:

[1, 3, 7, 9, 13, 17, 21, 37, 39, 51, 63, 91, 111, 117, 119, 153, 221, 259, 273, 333, 357, 481, 629, 663, 777, 819, 1071, 1443, 1547, 1887, 1989, 2331, 3367, 4329, 4403, 4641, 5661, 8177, 10101, 13209, 13923, 24531, 30303, 39627, 57239, 73593, 171717, 515151]

約数ペア:

[(1, 515151), (3, 171717), (7, 73593), (9, 57239), (13, 39627), (17, 30303), (21, 24531), (37, 13923), (39, 13209), (51, 10101), (63, 8177), (91, 5661), (111, 4641), (117, 4403), (119, 4329), (153, 3367), (221, 2331), (259, 1989), (273, 1887), (333, 1547), (357, 1443), (481, 1071), (629, 819), (663, 777)]