19891984

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1831}}^1$

素因数の和:1943

約数の個数: 40

約数和(自身を含む): 44524928

約数和(自身を除く): 24632944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1831, 2716, 3662, 5432, 7324, 10864, 12817, 14648, 25634, 29296, 51268, 102536, 177607, 205072, 355214, 710428, 1243249, 1420856, 2486498, 2841712, 4972996, 9945992, 19891984]

約数ペア:

[(1, 19891984), (2, 9945992), (4, 4972996), (7, 2841712), (8, 2486498), (14, 1420856), (16, 1243249), (28, 710428), (56, 355214), (97, 205072), (112, 177607), (194, 102536), (388, 51268), (679, 29296), (776, 25634), (1358, 14648), (1552, 12817), (1831, 10864), (2716, 7324), (3662, 5432)]