80961400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31139}}^1$

素因数の和:31168

約数の個数: 48

約数和(自身を含む): 202721400

約数和(自身を除く): 121760000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 31139, 62278, 124556, 155695, 249112, 311390, 404807, 622780, 778475, 809614, 1245560, 1556950, 1619228, 2024035, 3113900, 3238456, 4048070, 6227800, 8096140, 10120175, 16192280, 20240350, 40480700, 80961400]

約数ペア:

[(1, 80961400), (2, 40480700), (4, 20240350), (5, 16192280), (8, 10120175), (10, 8096140), (13, 6227800), (20, 4048070), (25, 3238456), (26, 3113900), (40, 2024035), (50, 1619228), (52, 1556950), (65, 1245560), (100, 809614), (104, 778475), (130, 622780), (200, 404807), (260, 311390), (325, 249112), (520, 155695), (650, 124556), (1300, 62278), (2600, 31139)]