21235256

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16487}}^1$

素因数の和:16523

約数の個数: 32

約数和(自身を含む): 47485440

約数和(自身を除く): 26250184

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16487, 32974, 65948, 115409, 131896, 230818, 379201, 461636, 758402, 923272, 1516804, 2654407, 3033608, 5308814, 10617628, 21235256]

約数ペア:

[(1, 21235256), (2, 10617628), (4, 5308814), (7, 3033608), (8, 2654407), (14, 1516804), (23, 923272), (28, 758402), (46, 461636), (56, 379201), (92, 230818), (161, 131896), (184, 115409), (322, 65948), (644, 32974), (1288, 16487)]