19912726

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{809}}^1$

素因数の和:1239

約数の個数: 16

約数和(自身を含む): 30948480

約数和(自身を除く): 11035754

約数列:

[1, 2, 31, 62, 397, 794, 809, 1618, 12307, 24614, 25079, 50158, 321173, 642346, 9956363, 19912726]

約数ペア:

[(1, 19912726), (2, 9956363), (31, 642346), (62, 321173), (397, 50158), (794, 25079), (809, 24614), (1618, 12307)]