201812015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 290304000

約数和(自身を除く): 88491985

約数列:

[1, 5, 17, 19, 29, 31, 85, 95, 139, 145, 155, 323, 493, 527, 551, 589, 695, 899, 1615, 2363, 2465, 2635, 2641, 2755, 2945, 4031, 4309, 4495, 9367, 10013, 11815, 13205, 15283, 17081, 20155, 21545, 44897, 46835, 50065, 68527, 73253, 76415, 76589, 81871, 85405, 124961, 224485, 290377, 342635, 366265, 382945, 409355, 624805, 1302013, 1391807, 1451885, 2124337, 2374259, 6510065, 6959035, 10621685, 11871295, 40362403, 201812015]

約数ペア:

[(1, 201812015), (5, 40362403), (17, 11871295), (19, 10621685), (29, 6959035), (31, 6510065), (85, 2374259), (95, 2124337), (139, 1451885), (145, 1391807), (155, 1302013), (323, 624805), (493, 409355), (527, 382945), (551, 366265), (589, 342635), (695, 290377), (899, 224485), (1615, 124961), (2363, 85405), (2465, 81871), (2635, 76589), (2641, 76415), (2755, 73253), (2945, 68527), (4031, 50065), (4309, 46835), (4495, 44897), (9367, 21545), (10013, 20155), (11815, 17081), (13205, 15283)]