138639920

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{13229}}^1$

素因数の和:13373

約数の個数: 40

約数和(自身を含む): 324822960

約数和(自身を除く): 186183040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 13229, 26458, 52916, 66145, 105832, 132290, 211664, 264580, 529160, 1058320, 1732999, 3465998, 6931996, 8664995, 13863992, 17329990, 27727984, 34659980, 69319960, 138639920]

約数ペア:

[(1, 138639920), (2, 69319960), (4, 34659980), (5, 27727984), (8, 17329990), (10, 13863992), (16, 8664995), (20, 6931996), (40, 3465998), (80, 1732999), (131, 1058320), (262, 529160), (524, 264580), (655, 211664), (1048, 132290), (1310, 105832), (2096, 66145), (2620, 52916), (5240, 26458), (10480, 13229)]