72478960

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1409}}^1$

素因数の和:2065

約数の個数: 40

約数和(自身を含む): 168895440

約数和(自身を除く): 96416480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 1409, 2572, 2818, 3215, 5144, 5636, 6430, 7045, 10288, 11272, 12860, 14090, 22544, 25720, 28180, 51440, 56360, 112720, 905987, 1811974, 3623948, 4529935, 7247896, 9059870, 14495792, 18119740, 36239480, 72478960]

約数ペア:

[(1, 72478960), (2, 36239480), (4, 18119740), (5, 14495792), (8, 9059870), (10, 7247896), (16, 4529935), (20, 3623948), (40, 1811974), (80, 905987), (643, 112720), (1286, 56360), (1409, 51440), (2572, 28180), (2818, 25720), (3215, 22544), (5144, 14090), (5636, 12860), (6430, 11272), (7045, 10288)]