890807905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{4177}}^1$

素因数の和:4405

約数の個数: 32

約数和(自身を含む): 1225524384

約数和(自身を除く): 334716479

約数列:

[1, 5, 13, 17, 65, 85, 193, 221, 965, 1105, 2509, 3281, 4177, 12545, 16405, 20885, 42653, 54301, 71009, 213265, 271505, 355045, 806161, 923117, 4030805, 4615585, 10480093, 13704737, 52400465, 68523685, 178161581, 890807905]

約数ペア:

[(1, 890807905), (5, 178161581), (13, 68523685), (17, 52400465), (65, 13704737), (85, 10480093), (193, 4615585), (221, 4030805), (965, 923117), (1105, 806161), (2509, 355045), (3281, 271505), (4177, 213265), (12545, 71009), (16405, 54301), (20885, 42653)]