18666250

素因数分解:

$2^1\times 5^4\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 40

約数和(自身を含む): 35566740

約数和(自身を除く): 16900490

約数列:

[1, 2, 5, 10, 25, 50, 109, 125, 137, 218, 250, 274, 545, 625, 685, 1090, 1250, 1370, 2725, 3425, 5450, 6850, 13625, 14933, 17125, 27250, 29866, 34250, 68125, 74665, 85625, 136250, 149330, 171250, 373325, 746650, 1866625, 3733250, 9333125, 18666250]

約数ペア:

[(1, 18666250), (2, 9333125), (5, 3733250), (10, 1866625), (25, 746650), (50, 373325), (109, 171250), (125, 149330), (137, 136250), (218, 85625), (250, 74665), (274, 68125), (545, 34250), (625, 29866), (685, 27250), (1090, 17125), (1250, 14933), (1370, 13625), (2725, 6850), (3425, 5450)]