20517015

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 34163136

約数和(自身を除く): 13646121

約数列:

[1, 3, 5, 15, 41, 73, 123, 205, 219, 365, 457, 615, 1095, 1371, 2285, 2993, 6855, 8979, 14965, 18737, 33361, 44895, 56211, 93685, 100083, 166805, 281055, 500415, 1367801, 4103403, 6839005, 20517015]

約数ペア:

[(1, 20517015), (3, 6839005), (5, 4103403), (15, 1367801), (41, 500415), (73, 281055), (123, 166805), (205, 100083), (219, 93685), (365, 56211), (457, 44895), (615, 33361), (1095, 18737), (1371, 14965), (2285, 8979), (2993, 6855)]