20117968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{311}}^2$

素因数の和:643

約数の個数: 30

約数和(自身を含む): 42112322

約数和(自身を除く): 21994354

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 311, 622, 1244, 2488, 4043, 4976, 8086, 16172, 32344, 64688, 96721, 193442, 386884, 773768, 1257373, 1547536, 2514746, 5029492, 10058984, 20117968]

約数ペア:

[(1, 20117968), (2, 10058984), (4, 5029492), (8, 2514746), (13, 1547536), (16, 1257373), (26, 773768), (52, 386884), (104, 193442), (208, 96721), (311, 64688), (622, 32344), (1244, 16172), (2488, 8086), (4043, 4976)]