19898067

素因数分解:

$3^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{607}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 31051776

約数和(自身を除く): 11153709

約数列:

[1, 3, 7, 21, 49, 147, 223, 607, 669, 1561, 1821, 4249, 4683, 10927, 12747, 29743, 32781, 89229, 135361, 406083, 947527, 2842581, 6632689, 19898067]

約数ペア:

[(1, 19898067), (3, 6632689), (7, 2842581), (21, 947527), (49, 406083), (147, 135361), (223, 89229), (607, 32781), (669, 29743), (1561, 12747), (1821, 10927), (4249, 4683)]