78428200

素因数分解:

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

素因数の和:20674

約数の個数: 48

約数和(自身を含む): 191952000

約数和(自身を除く): 113523800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 20639, 41278, 82556, 103195, 165112, 206390, 392141, 412780, 515975, 784282, 825560, 1031950, 1568564, 1960705, 2063900, 3137128, 3921410, 4127800, 7842820, 9803525, 15685640, 19607050, 39214100, 78428200]

約数ペア:

[(1, 78428200), (2, 39214100), (4, 19607050), (5, 15685640), (8, 9803525), (10, 7842820), (19, 4127800), (20, 3921410), (25, 3137128), (38, 2063900), (40, 1960705), (50, 1568564), (76, 1031950), (95, 825560), (100, 784282), (152, 515975), (190, 412780), (200, 392141), (380, 206390), (475, 165112), (760, 103195), (950, 82556), (1900, 41278), (3800, 20639)]