21564064

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:469

約数の個数: 48

約数和(自身を含む): 44960832

約数和(自身を除く): 23396768

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 83, 92, 166, 184, 332, 353, 368, 664, 706, 736, 1328, 1412, 1909, 2656, 2824, 3818, 5648, 7636, 8119, 11296, 15272, 16238, 29299, 30544, 32476, 58598, 61088, 64952, 117196, 129904, 234392, 259808, 468784, 673877, 937568, 1347754, 2695508, 5391016, 10782032, 21564064]

約数ペア:

[(1, 21564064), (2, 10782032), (4, 5391016), (8, 2695508), (16, 1347754), (23, 937568), (32, 673877), (46, 468784), (83, 259808), (92, 234392), (166, 129904), (184, 117196), (332, 64952), (353, 61088), (368, 58598), (664, 32476), (706, 30544), (736, 29299), (1328, 16238), (1412, 15272), (1909, 11296), (2656, 8119), (2824, 7636), (3818, 5648)]