213731451

素因数分解:

$3^2\times {\mathrm{109}}^1\times {\mathrm{223}}^1\times {\mathrm{977}}^1$

素因数の和:1315

約数の個数: 24

約数和(自身を含む): 313272960

約数和(自身を除く): 99541509

約数列:

[1, 3, 9, 109, 223, 327, 669, 977, 981, 2007, 2931, 8793, 24307, 72921, 106493, 217871, 218763, 319479, 653613, 958437, 1960839, 23747939, 71243817, 213731451]

約数ペア:

[(1, 213731451), (3, 71243817), (9, 23747939), (109, 1960839), (223, 958437), (327, 653613), (669, 319479), (977, 218763), (981, 217871), (2007, 106493), (2931, 72921), (8793, 24307)]