9789980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11939}}^1$

素因数の和:11989

約数の個数: 24

約数和(自身を含む): 21062160

約数和(自身を除く): 11272180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 11939, 23878, 47756, 59695, 119390, 238780, 489499, 978998, 1957996, 2447495, 4894990, 9789980]

約数ペア:

[(1, 9789980), (2, 4894990), (4, 2447495), (5, 1957996), (10, 978998), (20, 489499), (41, 238780), (82, 119390), (164, 59695), (205, 47756), (410, 23878), (820, 11939)]