21129968248

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{7316471}}^1$

素因数の和:7316515

約数の個数: 24

約数和(自身を含む): 41813637480

約数和(自身を除く): 20683669232

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 361, 722, 1444, 2888, 7316471, 14632942, 29265884, 58531768, 139012949, 278025898, 556051796, 1112103592, 2641246031, 5282492062, 10564984124, 21129968248]

約数ペア:

[(1, 21129968248), (2, 10564984124), (4, 5282492062), (8, 2641246031), (19, 1112103592), (38, 556051796), (76, 278025898), (152, 139012949), (361, 58531768), (722, 29265884), (1444, 14632942), (2888, 7316471)]