21045274

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{1063}}^1$

素因数の和:1605

約数の個数: 16

約数和(自身を含む): 33324480

約数和(自身を除く): 12279206

約数列:

[1, 2, 19, 38, 521, 1042, 1063, 2126, 9899, 19798, 20197, 40394, 553823, 1107646, 10522637, 21045274]

約数ペア:

[(1, 21045274), (2, 10522637), (19, 1107646), (38, 553823), (521, 40394), (1042, 20197), (1063, 19798), (2126, 9899)]