28218743

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{641}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 34103040

約数和(自身を除く): 5884297

約数列:

[1, 7, 19, 133, 331, 641, 2317, 4487, 6289, 12179, 44023, 85253, 212171, 1485197, 4031249, 28218743]

約数ペア:

[(1, 28218743), (7, 4031249), (19, 1485197), (133, 212171), (331, 85253), (641, 44023), (2317, 12179), (4487, 6289)]