123651280

素因数分解:

$2^4\times 5^1\times {\mathrm{1545641}}^1$

素因数の和:1545654

約数の個数: 20

約数和(自身を含む): 287489412

約数和(自身を除く): 163838132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1545641, 3091282, 6182564, 7728205, 12365128, 15456410, 24730256, 30912820, 61825640, 123651280]

約数ペア:

[(1, 123651280), (2, 61825640), (4, 30912820), (5, 24730256), (8, 15456410), (10, 12365128), (16, 7728205), (20, 6182564), (40, 3091282), (80, 1545641)]