21035144

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{907}}^1$

素因数の和:1149

約数の個数: 32

約数和(自身を含む): 42712320

約数和(自身を除く): 21677176

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 223, 446, 892, 907, 1784, 1814, 2899, 3628, 5798, 7256, 11596, 11791, 23192, 23582, 47164, 94328, 202261, 404522, 809044, 1618088, 2629393, 5258786, 10517572, 21035144]

約数ペア:

[(1, 21035144), (2, 10517572), (4, 5258786), (8, 2629393), (13, 1618088), (26, 809044), (52, 404522), (104, 202261), (223, 94328), (446, 47164), (892, 23582), (907, 23192), (1784, 11791), (1814, 11596), (2899, 7256), (3628, 5798)]