85198780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{389}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 183980160

約数和(自身を除く): 98781380

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 233, 235, 389, 466, 470, 778, 932, 940, 1165, 1556, 1945, 2330, 3890, 4660, 7780, 10951, 18283, 21902, 36566, 43804, 54755, 73132, 90637, 91415, 109510, 181274, 182830, 219020, 362548, 365660, 453185, 906370, 1812740, 4259939, 8519878, 17039756, 21299695, 42599390, 85198780]

約数ペア:

[(1, 85198780), (2, 42599390), (4, 21299695), (5, 17039756), (10, 8519878), (20, 4259939), (47, 1812740), (94, 906370), (188, 453185), (233, 365660), (235, 362548), (389, 219020), (466, 182830), (470, 181274), (778, 109510), (932, 91415), (940, 90637), (1165, 73132), (1556, 54755), (1945, 43804), (2330, 36566), (3890, 21902), (4660, 18283), (7780, 10951)]