21081386

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{8647}}^1$

素因数の和:8725

約数の個数: 16

約数和(自身を含む): 33623424

約数和(自身を除く): 12542038

約数列:

[1, 2, 23, 46, 53, 106, 1219, 2438, 8647, 17294, 198881, 397762, 458291, 916582, 10540693, 21081386]

約数ペア:

[(1, 21081386), (2, 10540693), (23, 916582), (46, 458291), (53, 397762), (106, 198881), (1219, 17294), (2438, 8647)]