19997079

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:718

約数の個数: 16

約数和(自身を含む): 27224064

約数和(自身を除く): 7226985

約数列:

[1, 3, 71, 213, 223, 421, 669, 1263, 15833, 29891, 47499, 89673, 93883, 281649, 6665693, 19997079]

約数ペア:

[(1, 19997079), (3, 6665693), (71, 281649), (213, 93883), (223, 89673), (421, 47499), (669, 29891), (1263, 15833)]