66820220

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 143270400

約数和(自身を除く): 76450180

約数列:

[1, 2, 4, 5, 10, 20, 103, 163, 199, 206, 326, 398, 412, 515, 652, 796, 815, 995, 1030, 1630, 1990, 2060, 3260, 3980, 16789, 20497, 32437, 33578, 40994, 64874, 67156, 81988, 83945, 102485, 129748, 162185, 167890, 204970, 324370, 335780, 409940, 648740, 3341011, 6682022, 13364044, 16705055, 33410110, 66820220]

約数ペア:

[(1, 66820220), (2, 33410110), (4, 16705055), (5, 13364044), (10, 6682022), (20, 3341011), (103, 648740), (163, 409940), (199, 335780), (206, 324370), (326, 204970), (398, 167890), (412, 162185), (515, 129748), (652, 102485), (796, 83945), (815, 81988), (995, 67156), (1030, 64874), (1630, 40994), (1990, 33578), (2060, 32437), (3260, 20497), (3980, 16789)]