20962660

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 46368000

約数和(自身を除く): 25405340

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 199, 229, 230, 398, 458, 460, 796, 916, 995, 1145, 1990, 2290, 3980, 4577, 4580, 5267, 9154, 10534, 18308, 21068, 22885, 26335, 45571, 45770, 52670, 91142, 91540, 105340, 182284, 227855, 455710, 911420, 1048133, 2096266, 4192532, 5240665, 10481330, 20962660]

約数ペア:

[(1, 20962660), (2, 10481330), (4, 5240665), (5, 4192532), (10, 2096266), (20, 1048133), (23, 911420), (46, 455710), (92, 227855), (115, 182284), (199, 105340), (229, 91540), (230, 91142), (398, 52670), (458, 45770), (460, 45571), (796, 26335), (916, 22885), (995, 21068), (1145, 18308), (1990, 10534), (2290, 9154), (3980, 5267), (4577, 4580)]