138869240

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{17623}}^1$

素因数の和:17831

約数の個数: 32

約数和(自身を含む): 314059680

約数和(自身を除く): 175190440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 17623, 35246, 70492, 88115, 140984, 176230, 352460, 704920, 3471731, 6943462, 13886924, 17358655, 27773848, 34717310, 69434620, 138869240]

約数ペア:

[(1, 138869240), (2, 69434620), (4, 34717310), (5, 27773848), (8, 17358655), (10, 13886924), (20, 6943462), (40, 3471731), (197, 704920), (394, 352460), (788, 176230), (985, 140984), (1576, 88115), (1970, 70492), (3940, 35246), (7880, 17623)]