18211215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 34583040

約数和(自身を除く): 16371825

約数列:

[1, 3, 5, 11, 15, 19, 33, 37, 55, 57, 95, 111, 157, 165, 185, 209, 285, 407, 471, 555, 627, 703, 785, 1045, 1221, 1727, 2035, 2109, 2355, 2983, 3135, 3515, 5181, 5809, 6105, 7733, 8635, 8949, 10545, 14915, 17427, 23199, 25905, 29045, 32813, 38665, 44745, 63899, 87135, 98439, 110371, 115995, 164065, 191697, 319495, 331113, 492195, 551855, 958485, 1214081, 1655565, 3642243, 6070405, 18211215]

約数ペア:

[(1, 18211215), (3, 6070405), (5, 3642243), (11, 1655565), (15, 1214081), (19, 958485), (33, 551855), (37, 492195), (55, 331113), (57, 319495), (95, 191697), (111, 164065), (157, 115995), (165, 110371), (185, 98439), (209, 87135), (285, 63899), (407, 44745), (471, 38665), (555, 32813), (627, 29045), (703, 25905), (785, 23199), (1045, 17427), (1221, 14915), (1727, 10545), (2035, 8949), (2109, 8635), (2355, 7733), (2983, 6105), (3135, 5809), (3515, 5181)]