15685640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20639}}^1$

素因数の和:20669

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 21466360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 20639, 41278, 82556, 103195, 165112, 206390, 392141, 412780, 784282, 825560, 1568564, 1960705, 3137128, 3921410, 7842820, 15685640]

約数ペア:

[(1, 15685640), (2, 7842820), (4, 3921410), (5, 3137128), (8, 1960705), (10, 1568564), (19, 825560), (20, 784282), (38, 412780), (40, 392141), (76, 206390), (95, 165112), (152, 103195), (190, 82556), (380, 41278), (760, 20639)]