20434520

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1049}}^1$

素因数の和:1547

約数の個数: 32

約数和(自身を含む): 46116000

約数和(自身を除く): 25681480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1049, 1948, 2098, 2435, 3896, 4196, 4870, 5245, 8392, 9740, 10490, 19480, 20980, 41960, 510863, 1021726, 2043452, 2554315, 4086904, 5108630, 10217260, 20434520]

約数ペア:

[(1, 20434520), (2, 10217260), (4, 5108630), (5, 4086904), (8, 2554315), (10, 2043452), (20, 1021726), (40, 510863), (487, 41960), (974, 20980), (1049, 19480), (1948, 10490), (2098, 9740), (2435, 8392), (3896, 5245), (4196, 4870)]