128691260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1194

約数の個数: 48

約数和(自身を含む): 278648832

約数和(自身を除く): 149957572

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 151, 172, 215, 302, 430, 604, 755, 860, 991, 1510, 1982, 3020, 3964, 4955, 6493, 9910, 12986, 19820, 25972, 32465, 42613, 64930, 85226, 129860, 149641, 170452, 213065, 299282, 426130, 598564, 748205, 852260, 1496410, 2992820, 6434563, 12869126, 25738252, 32172815, 64345630, 128691260]

約数ペア:

[(1, 128691260), (2, 64345630), (4, 32172815), (5, 25738252), (10, 12869126), (20, 6434563), (43, 2992820), (86, 1496410), (151, 852260), (172, 748205), (215, 598564), (302, 426130), (430, 299282), (604, 213065), (755, 170452), (860, 149641), (991, 129860), (1510, 85226), (1982, 64930), (3020, 42613), (3964, 32465), (4955, 25972), (6493, 19820), (9910, 12986)]