391400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 967200

約数和(自身を除く): 575800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 103, 152, 190, 200, 206, 380, 412, 475, 515, 760, 824, 950, 1030, 1900, 1957, 2060, 2575, 3800, 3914, 4120, 5150, 7828, 9785, 10300, 15656, 19570, 20600, 39140, 48925, 78280, 97850, 195700, 391400]

約数ペア:

[(1, 391400), (2, 195700), (4, 97850), (5, 78280), (8, 48925), (10, 39140), (19, 20600), (20, 19570), (25, 15656), (38, 10300), (40, 9785), (50, 7828), (76, 5150), (95, 4120), (100, 3914), (103, 3800), (152, 2575), (190, 2060), (200, 1957), (206, 1900), (380, 1030), (412, 950), (475, 824), (515, 760)]