20781646205

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1091}}^1\times {\mathrm{2269}}^1$

素因数の和:3461

約数の個数: 32

約数和(自身を含む): 26414519040

約数和(自身を除く): 5632872835

約数列:

[1, 5, 23, 73, 115, 365, 1091, 1679, 2269, 5455, 8395, 11345, 25093, 52187, 79643, 125465, 165637, 260935, 398215, 828185, 1831789, 2475479, 3809651, 9158945, 12377395, 19048255, 56936017, 180709967, 284680085, 903549835, 4156329241, 20781646205]

約数ペア:

[(1, 20781646205), (5, 4156329241), (23, 903549835), (73, 284680085), (115, 180709967), (365, 56936017), (1091, 19048255), (1679, 12377395), (2269, 9158945), (5455, 3809651), (8395, 2475479), (11345, 1831789), (25093, 828185), (52187, 398215), (79643, 260935), (125465, 165637)]