128424820

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{37117}}^1$

素因数の和:37299

約数の個数: 24

約数和(自身を含む): 271258344

約数和(自身を除く): 142833524

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 37117, 74234, 148468, 185585, 371170, 742340, 6421241, 12842482, 25684964, 32106205, 64212410, 128424820]

約数ペア:

[(1, 128424820), (2, 64212410), (4, 32106205), (5, 25684964), (10, 12842482), (20, 6421241), (173, 742340), (346, 371170), (692, 185585), (865, 148468), (1730, 74234), (3460, 37117)]