201531005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 301190400

約数和(自身を除く): 99659395

約数列:

[1, 5, 13, 17, 19, 29, 65, 85, 95, 145, 221, 247, 323, 331, 377, 493, 551, 1105, 1235, 1615, 1655, 1885, 2465, 2755, 4199, 4303, 5627, 6289, 6409, 7163, 9367, 9599, 20995, 21515, 28135, 31445, 32045, 35815, 46835, 47995, 73151, 81757, 106913, 121771, 124787, 163183, 182381, 365755, 408785, 534565, 608855, 623935, 815915, 911905, 1389869, 2121379, 2370953, 3100477, 6949345, 10606895, 11854765, 15502385, 40306201, 201531005]

約数ペア:

[(1, 201531005), (5, 40306201), (13, 15502385), (17, 11854765), (19, 10606895), (29, 6949345), (65, 3100477), (85, 2370953), (95, 2121379), (145, 1389869), (221, 911905), (247, 815915), (323, 623935), (331, 608855), (377, 534565), (493, 408785), (551, 365755), (1105, 182381), (1235, 163183), (1615, 124787), (1655, 121771), (1885, 106913), (2465, 81757), (2755, 73151), (4199, 47995), (4303, 46835), (5627, 35815), (6289, 32045), (6409, 31445), (7163, 28135), (9367, 21515), (9599, 20995)]