12981880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1123}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 31056120

約数和(自身を除く): 18074240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1123, 1156, 1445, 2246, 2312, 2890, 4492, 5615, 5780, 8984, 11230, 11560, 19091, 22460, 38182, 44920, 76364, 95455, 152728, 190910, 324547, 381820, 649094, 763640, 1298188, 1622735, 2596376, 3245470, 6490940, 12981880]

約数ペア:

[(1, 12981880), (2, 6490940), (4, 3245470), (5, 2596376), (8, 1622735), (10, 1298188), (17, 763640), (20, 649094), (34, 381820), (40, 324547), (68, 190910), (85, 152728), (136, 95455), (170, 76364), (289, 44920), (340, 38182), (578, 22460), (680, 19091), (1123, 11560), (1156, 11230), (1445, 8984), (2246, 5780), (2312, 5615), (2890, 4492)]