320359720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{73477}}^1$

素因数の和:73597

約数の個数: 32

約数和(自身を含む): 727432200

約数和(自身を除く): 407072480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 73477, 146954, 293908, 367385, 587816, 734770, 1469540, 2939080, 8008993, 16017986, 32035972, 40044965, 64071944, 80089930, 160179860, 320359720]

約数ペア:

[(1, 320359720), (2, 160179860), (4, 80089930), (5, 64071944), (8, 40044965), (10, 32035972), (20, 16017986), (40, 8008993), (109, 2939080), (218, 1469540), (436, 734770), (545, 587816), (872, 367385), (1090, 293908), (2180, 146954), (4360, 73477)]