20880147195

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{845179}}^1$

素因数の和:845257

約数の個数: 40

約数和(自身を含む): 38043242160

約数和(自身を除く): 17163094965

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 915, 1647, 2745, 4941, 8235, 24705, 845179, 2535537, 4225895, 7606611, 12677685, 22819833, 38033055, 51555919, 68459499, 114099165, 154667757, 257779595, 342297495, 464003271, 773338785, 1392009813, 2320016355, 4176029439, 6960049065, 20880147195]

約数ペア:

[(1, 20880147195), (3, 6960049065), (5, 4176029439), (9, 2320016355), (15, 1392009813), (27, 773338785), (45, 464003271), (61, 342297495), (81, 257779595), (135, 154667757), (183, 114099165), (305, 68459499), (405, 51555919), (549, 38033055), (915, 22819833), (1647, 12677685), (2745, 7606611), (4941, 4225895), (8235, 2535537), (24705, 845179)]