2101780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5531}}^1$

素因数の和:5559

約数の個数: 24

約数和(自身を含む): 4646880

約数和(自身を除く): 2545100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 5531, 11062, 22124, 27655, 55310, 105089, 110620, 210178, 420356, 525445, 1050890, 2101780]

約数ペア:

[(1, 2101780), (2, 1050890), (4, 525445), (5, 420356), (10, 210178), (19, 110620), (20, 105089), (38, 55310), (76, 27655), (95, 22124), (190, 11062), (380, 5531)]