18971421

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{8443}}^1$

素因数の和:8560

約数の個数: 16

約数和(自身を含む): 29182464

約数和(自身を除く): 10211043

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 8443, 25329, 59101, 177303, 903401, 2710203, 6323807, 18971421]

約数ペア:

[(1, 18971421), (3, 6323807), (7, 2710203), (21, 903401), (107, 177303), (321, 59101), (749, 25329), (2247, 8443)]