21051716

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 44518656

約数和(自身を除く): 23466940

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 97, 161, 194, 322, 337, 388, 644, 674, 679, 1348, 1358, 2231, 2359, 2716, 4462, 4718, 7751, 8924, 9436, 15502, 15617, 31004, 31234, 32689, 54257, 62468, 65378, 108514, 130756, 217028, 228823, 457646, 751847, 915292, 1503694, 3007388, 5262929, 10525858, 21051716]

約数ペア:

[(1, 21051716), (2, 10525858), (4, 5262929), (7, 3007388), (14, 1503694), (23, 915292), (28, 751847), (46, 457646), (92, 228823), (97, 217028), (161, 130756), (194, 108514), (322, 65378), (337, 62468), (388, 54257), (644, 32689), (674, 31234), (679, 31004), (1348, 15617), (1358, 15502), (2231, 9436), (2359, 8924), (2716, 7751), (4462, 4718)]