21355316

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:708

約数の個数: 36

約数和(自身を含む): 41221152

約数和(自身を除く): 19865836

約数列:

[1, 2, 4, 19, 23, 38, 46, 76, 92, 361, 437, 643, 722, 874, 1286, 1444, 1748, 2572, 8303, 12217, 14789, 16606, 24434, 29578, 33212, 48868, 59156, 232123, 280991, 464246, 561982, 928492, 1123964, 5338829, 10677658, 21355316]

約数ペア:

[(1, 21355316), (2, 10677658), (4, 5338829), (19, 1123964), (23, 928492), (38, 561982), (46, 464246), (76, 280991), (92, 232123), (361, 59156), (437, 48868), (643, 33212), (722, 29578), (874, 24434), (1286, 16606), (1444, 14789), (1748, 12217), (2572, 8303)]