1998011385

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:587

約数の個数: 72

約数和(自身を含む): 3616273752

約数和(自身を除く): 1618262367

約数列:

[1, 3, 5, 9, 15, 41, 45, 61, 123, 183, 205, 305, 369, 433, 549, 615, 915, 1299, 1681, 1845, 2165, 2501, 2745, 3897, 5043, 6495, 7503, 8405, 12505, 15129, 17753, 19485, 22509, 25215, 26413, 37515, 53259, 75645, 79239, 88765, 102541, 112545, 132065, 159777, 237717, 266295, 307623, 396195, 512705, 727873, 798885, 922869, 1082933, 1188585, 1538115, 2183619, 3248799, 3639365, 4614345, 5414665, 6550857, 9746397, 10918095, 16243995, 32754285, 44400253, 48731985, 133200759, 222001265, 399602277, 666003795, 1998011385]

約数ペア:

[(1, 1998011385), (3, 666003795), (5, 399602277), (9, 222001265), (15, 133200759), (41, 48731985), (45, 44400253), (61, 32754285), (123, 16243995), (183, 10918095), (205, 9746397), (305, 6550857), (369, 5414665), (433, 4614345), (549, 3639365), (615, 3248799), (915, 2183619), (1299, 1538115), (1681, 1188585), (1845, 1082933), (2165, 922869), (2501, 798885), (2745, 727873), (3897, 512705), (5043, 396195), (6495, 307623), (7503, 266295), (8405, 237717), (12505, 159777), (15129, 132065), (17753, 112545), (19485, 102541), (22509, 88765), (25215, 79239), (26413, 75645), (37515, 53259)]