21181432

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{383}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 41287680

約数和(自身を除く): 20106248

約数列:

[1, 2, 4, 8, 31, 62, 124, 223, 248, 383, 446, 766, 892, 1532, 1784, 3064, 6913, 11873, 13826, 23746, 27652, 47492, 55304, 85409, 94984, 170818, 341636, 683272, 2647679, 5295358, 10590716, 21181432]

約数ペア:

[(1, 21181432), (2, 10590716), (4, 5295358), (8, 2647679), (31, 683272), (62, 341636), (124, 170818), (223, 94984), (248, 85409), (383, 55304), (446, 47492), (766, 27652), (892, 23746), (1532, 13826), (1784, 11873), (3064, 6913)]