128668040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{313}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 298425600

約数和(自身を除く): 169757560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 239, 313, 344, 430, 478, 626, 860, 956, 1195, 1252, 1565, 1720, 1912, 2390, 2504, 3130, 4780, 6260, 9560, 10277, 12520, 13459, 20554, 26918, 41108, 51385, 53836, 67295, 74807, 82216, 102770, 107672, 134590, 149614, 205540, 269180, 299228, 374035, 411080, 538360, 598456, 748070, 1496140, 2992280, 3216701, 6433402, 12866804, 16083505, 25733608, 32167010, 64334020, 128668040]

約数ペア:

[(1, 128668040), (2, 64334020), (4, 32167010), (5, 25733608), (8, 16083505), (10, 12866804), (20, 6433402), (40, 3216701), (43, 2992280), (86, 1496140), (172, 748070), (215, 598456), (239, 538360), (313, 411080), (344, 374035), (430, 299228), (478, 269180), (626, 205540), (860, 149614), (956, 134590), (1195, 107672), (1252, 102770), (1565, 82216), (1720, 74807), (1912, 67295), (2390, 53836), (2504, 51385), (3130, 41108), (4780, 26918), (6260, 20554), (9560, 13459), (10277, 12520)]