21364816

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6389}}^1$

素因数の和:6427

約数の個数: 40

約数和(自身を含む): 47541600

約数和(自身を除く): 26176784

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 418, 836, 1672, 3344, 6389, 12778, 25556, 51112, 70279, 102224, 121391, 140558, 242782, 281116, 485564, 562232, 971128, 1124464, 1335301, 1942256, 2670602, 5341204, 10682408, 21364816]

約数ペア:

[(1, 21364816), (2, 10682408), (4, 5341204), (8, 2670602), (11, 1942256), (16, 1335301), (19, 1124464), (22, 971128), (38, 562232), (44, 485564), (76, 281116), (88, 242782), (152, 140558), (176, 121391), (209, 102224), (304, 70279), (418, 51112), (836, 25556), (1672, 12778), (3344, 6389)]