161721265

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 208198656

約数和(自身を除く): 46477391

約数列:

[1, 5, 31, 37, 155, 163, 173, 185, 815, 865, 1147, 5053, 5363, 5735, 6031, 6401, 25265, 26815, 28199, 30155, 32005, 140995, 186961, 198431, 874169, 934805, 992155, 1043363, 4370845, 5216815, 32344253, 161721265]

約数ペア:

[(1, 161721265), (5, 32344253), (31, 5216815), (37, 4370845), (155, 1043363), (163, 992155), (173, 934805), (185, 874169), (815, 198431), (865, 186961), (1147, 140995), (5053, 32005), (5363, 30155), (5735, 28199), (6031, 26815), (6401, 25265)]