139394920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497839}}^1$

素因数の和:497857

約数の個数: 32

約数和(自身を含む): 358444800

約数和(自身を除く): 219049880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497839, 995678, 1991356, 2489195, 3484873, 3982712, 4978390, 6969746, 9956780, 13939492, 17424365, 19913560, 27878984, 34848730, 69697460, 139394920]

約数ペア:

[(1, 139394920), (2, 69697460), (4, 34848730), (5, 27878984), (7, 19913560), (8, 17424365), (10, 13939492), (14, 9956780), (20, 6969746), (28, 4978390), (35, 3982712), (40, 3484873), (56, 2489195), (70, 1991356), (140, 995678), (280, 497839)]