138688040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{203953}}^1$

素因数の和:203981

約数の個数: 32

約数和(自身を含む): 330405480

約数和(自身を除く): 191717440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 203953, 407906, 815812, 1019765, 1631624, 2039530, 3467201, 4079060, 6934402, 8158120, 13868804, 17336005, 27737608, 34672010, 69344020, 138688040]

約数ペア:

[(1, 138688040), (2, 69344020), (4, 34672010), (5, 27737608), (8, 17336005), (10, 13868804), (17, 8158120), (20, 6934402), (34, 4079060), (40, 3467201), (68, 2039530), (85, 1631624), (136, 1019765), (170, 815812), (340, 407906), (680, 203953)]