21623749

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{2741}}^1$

素因数の和:2785

約数の個数: 16

約数和(自身を含む): 26323200

約数和(自身を除く): 4699451

約数列:

[1, 7, 23, 49, 161, 343, 1127, 2741, 7889, 19187, 63043, 134309, 441301, 940163, 3089107, 21623749]

約数ペア:

[(1, 21623749), (7, 3089107), (23, 940163), (49, 441301), (161, 134309), (343, 63043), (1127, 19187), (2741, 7889)]