21510559

素因数分解:

$7^4\times {\mathrm{17}}^2\times {\mathrm{31}}^1$

素因数の和:93

約数の個数: 30

約数和(自身を含む): 27517024

約数和(自身を除く): 6006465

約数列:

[1, 7, 17, 31, 49, 119, 217, 289, 343, 527, 833, 1519, 2023, 2401, 3689, 5831, 8959, 10633, 14161, 25823, 40817, 62713, 74431, 99127, 180761, 438991, 693889, 1265327, 3072937, 21510559]

約数ペア:

[(1, 21510559), (7, 3072937), (17, 1265327), (31, 693889), (49, 438991), (119, 180761), (217, 99127), (289, 74431), (343, 62713), (527, 40817), (833, 25823), (1519, 14161), (2023, 10633), (2401, 8959), (3689, 5831)]