128807868

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:959

約数の個数: 72

約数和(自身を含む): 351120000

約数和(自身を除く): 222312132

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 439, 499, 588, 878, 998, 1317, 1497, 1756, 1996, 2634, 2994, 3073, 3493, 5268, 5988, 6146, 6986, 9219, 10479, 12292, 13972, 18438, 20958, 21511, 24451, 36876, 41916, 43022, 48902, 64533, 73353, 86044, 97804, 129066, 146706, 219061, 258132, 293412, 438122, 657183, 876244, 1314366, 1533427, 2628732, 3066854, 4600281, 6133708, 9200562, 10733989, 18401124, 21467978, 32201967, 42935956, 64403934, 128807868]

約数ペア:

[(1, 128807868), (2, 64403934), (3, 42935956), (4, 32201967), (6, 21467978), (7, 18401124), (12, 10733989), (14, 9200562), (21, 6133708), (28, 4600281), (42, 3066854), (49, 2628732), (84, 1533427), (98, 1314366), (147, 876244), (196, 657183), (294, 438122), (439, 293412), (499, 258132), (588, 219061), (878, 146706), (998, 129066), (1317, 97804), (1497, 86044), (1756, 73353), (1996, 64533), (2634, 48902), (2994, 43022), (3073, 41916), (3493, 36876), (5268, 24451), (5988, 21511), (6146, 20958), (6986, 18438), (9219, 13972), (10479, 12292)]