128505778

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{24329}}^1$

素因数の和:24489

約数の個数: 16

約数和(自身を含む): 204372000

約数和(自身を除く): 75866222

約数列:

[1, 2, 19, 38, 139, 278, 2641, 5282, 24329, 48658, 462251, 924502, 3381731, 6763462, 64252889, 128505778]

約数ペア:

[(1, 128505778), (2, 64252889), (19, 6763462), (38, 3381731), (139, 924502), (278, 462251), (2641, 48658), (5282, 24329)]