128405080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{188831}}^1$

素因数の和:188859

約数の個数: 32

約数和(自身を含む): 305907840

約数和(自身を除く): 177502760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 188831, 377662, 755324, 944155, 1510648, 1888310, 3210127, 3776620, 6420254, 7553240, 12840508, 16050635, 25681016, 32101270, 64202540, 128405080]

約数ペア:

[(1, 128405080), (2, 64202540), (4, 32101270), (5, 25681016), (8, 16050635), (10, 12840508), (17, 7553240), (20, 6420254), (34, 3776620), (40, 3210127), (68, 1888310), (85, 1510648), (136, 944155), (170, 755324), (340, 377662), (680, 188831)]