1643639042

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{645577}}^1$

素因数の和:645665

約数の個数: 16

約数和(自身を含む): 2633958240

約数和(自身を除く): 990319198

約数列:

[1, 2, 19, 38, 67, 134, 1273, 2546, 645577, 1291154, 12265963, 24531926, 43253659, 86507318, 821819521, 1643639042]

約数ペア:

[(1, 1643639042), (2, 821819521), (19, 86507318), (38, 43253659), (67, 24531926), (134, 12265963), (1273, 1291154), (2546, 645577)]