21000902578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1\times {\mathrm{569161}}^1$

素因数の和:570153

約数の個数: 16

約数和(自身を含む): 33193527840

約数和(自身を除く): 12192625262

約数列:

[1, 2, 19, 38, 971, 1942, 18449, 36898, 569161, 1138322, 10814059, 21628118, 552655331, 1105310662, 10500451289, 21000902578]

約数ペア:

[(1, 21000902578), (2, 10500451289), (19, 1105310662), (38, 552655331), (971, 21628118), (1942, 10814059), (18449, 1138322), (36898, 569161)]