17920945

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 25804800

約数和(自身を除く): 7883855

約数列:

[1, 5, 7, 31, 35, 83, 155, 199, 217, 415, 581, 995, 1085, 1393, 2573, 2905, 6169, 6965, 12865, 16517, 18011, 30845, 43183, 82585, 90055, 115619, 215915, 512027, 578095, 2560135, 3584189, 17920945]

約数ペア:

[(1, 17920945), (5, 3584189), (7, 2560135), (31, 578095), (35, 512027), (83, 215915), (155, 115619), (199, 90055), (217, 82585), (415, 43183), (581, 30845), (995, 18011), (1085, 16517), (1393, 12865), (2573, 6965), (2905, 6169)]