129192520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{189989}}^1$

素因数の和:190017

約数の個数: 32

約数和(自身を含む): 307783800

約数和(自身を除く): 178591280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 189989, 379978, 759956, 949945, 1519912, 1899890, 3229813, 3799780, 6459626, 7599560, 12919252, 16149065, 25838504, 32298130, 64596260, 129192520]

約数ペア:

[(1, 129192520), (2, 64596260), (4, 32298130), (5, 25838504), (8, 16149065), (10, 12919252), (17, 7599560), (20, 6459626), (34, 3799780), (40, 3229813), (68, 1899890), (85, 1519912), (136, 949945), (170, 759956), (340, 379978), (680, 189989)]