20218752813

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1\times {\mathrm{40819}}^1$

素因数の和:41161

約数の個数: 32

約数和(自身を含む): 31245260800

約数和(自身を除く): 11026507987

約数列:

[1, 3, 7, 21, 103, 229, 309, 687, 721, 1603, 2163, 4809, 23587, 40819, 70761, 122457, 165109, 285733, 495327, 857199, 4204357, 9347551, 12613071, 28042653, 29430499, 65432857, 88291497, 196298571, 962797753, 2888393259, 6739584271, 20218752813]

約数ペア:

[(1, 20218752813), (3, 6739584271), (7, 2888393259), (21, 962797753), (103, 196298571), (229, 88291497), (309, 65432857), (687, 29430499), (721, 28042653), (1603, 12613071), (2163, 9347551), (4809, 4204357), (23587, 857199), (40819, 495327), (70761, 285733), (122457, 165109)]