18147280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11939}}^1$

素因数の和:11971

約数の個数: 40

約数和(自身を含む): 44416800

約数和(自身を除く): 26269520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 11939, 23878, 47756, 59695, 95512, 119390, 191024, 226841, 238780, 453682, 477560, 907364, 955120, 1134205, 1814728, 2268410, 3629456, 4536820, 9073640, 18147280]

約数ペア:

[(1, 18147280), (2, 9073640), (4, 4536820), (5, 3629456), (8, 2268410), (10, 1814728), (16, 1134205), (19, 955120), (20, 907364), (38, 477560), (40, 453682), (76, 238780), (80, 226841), (95, 191024), (152, 119390), (190, 95512), (304, 59695), (380, 47756), (760, 23878), (1520, 11939)]