21097419

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{7669}}^1$

素因数の和:7810

約数の個数: 16

約数和(自身を含む): 32398080

約数和(自身を除く): 11300661

約数列:

[1, 3, 7, 21, 131, 393, 917, 2751, 7669, 23007, 53683, 161049, 1004639, 3013917, 7032473, 21097419]

約数ペア:

[(1, 21097419), (3, 7032473), (7, 3013917), (21, 1004639), (131, 161049), (393, 53683), (917, 23007), (2751, 7669)]