989754910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1394021}}^1$

素因数の和:1394099

約数の個数: 16

約数和(自身を含む): 1806652512

約数和(自身を除く): 816897602

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1394021, 2788042, 6970105, 13940210, 98975491, 197950982, 494877455, 989754910]

約数ペア:

[(1, 989754910), (2, 494877455), (5, 197950982), (10, 98975491), (71, 13940210), (142, 6970105), (355, 2788042), (710, 1394021)]