19813773

素因数分解:

$3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4231}}^1$

素因数の和:4464

約数の個数: 16

約数和(自身を含む): 30334976

約数和(自身を除く): 10521203

約数列:

[1, 3, 7, 21, 223, 669, 1561, 4231, 4683, 12693, 29617, 88851, 943513, 2830539, 6604591, 19813773]

約数ペア:

[(1, 19813773), (3, 6604591), (7, 2830539), (21, 943513), (223, 88851), (669, 29617), (1561, 12693), (4231, 4683)]