399674210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{22441}}^1$

素因数の和:22598

約数の個数: 32

約数和(自身を含む): 780442992

約数和(自身を除く): 380768782

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 137, 274, 685, 1370, 1781, 3562, 8905, 17810, 22441, 44882, 112205, 224410, 291733, 583466, 1458665, 2917330, 3074417, 6148834, 15372085, 30744170, 39967421, 79934842, 199837105, 399674210]

約数ペア:

[(1, 399674210), (2, 199837105), (5, 79934842), (10, 39967421), (13, 30744170), (26, 15372085), (65, 6148834), (130, 3074417), (137, 2917330), (274, 1458665), (685, 583466), (1370, 291733), (1781, 224410), (3562, 112205), (8905, 44882), (17810, 22441)]