21680421

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{44887}}^1$

素因数の和:44920

約数の個数: 16

約数和(自身を含む): 34473984

約数和(自身を除く): 12793563

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 44887, 134661, 314209, 942627, 1032401, 3097203, 7226807, 21680421]

約数ペア:

[(1, 21680421), (3, 7226807), (7, 3097203), (21, 1032401), (23, 942627), (69, 314209), (161, 134661), (483, 44887)]