21341888

素因数分解:

$2^6\times {\mathrm{31}}^2\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 42

約数和(自身を含む): 43886628

約数和(自身を除く): 22544740

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 347, 496, 694, 961, 992, 1388, 1922, 1984, 2776, 3844, 5552, 7688, 10757, 11104, 15376, 21514, 22208, 30752, 43028, 61504, 86056, 172112, 333467, 344224, 666934, 688448, 1333868, 2667736, 5335472, 10670944, 21341888]

約数ペア:

[(1, 21341888), (2, 10670944), (4, 5335472), (8, 2667736), (16, 1333868), (31, 688448), (32, 666934), (62, 344224), (64, 333467), (124, 172112), (248, 86056), (347, 61504), (496, 43028), (694, 30752), (961, 22208), (992, 21514), (1388, 15376), (1922, 11104), (1984, 10757), (2776, 7688), (3844, 5552)]