130399780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{491}}^1$

素因数の和:785

約数の個数: 72

約数和(自身を含む): 320374656

約数和(自身を除く): 189974876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 271, 490, 491, 542, 980, 982, 1084, 1355, 1897, 1964, 2455, 2710, 3437, 3794, 4910, 5420, 6874, 7588, 9485, 9820, 13279, 13748, 17185, 18970, 24059, 26558, 34370, 37940, 48118, 53116, 66395, 68740, 96236, 120295, 132790, 133061, 240590, 265580, 266122, 481180, 532244, 665305, 931427, 1330610, 1862854, 2661220, 3725708, 4657135, 6519989, 9314270, 13039978, 18628540, 26079956, 32599945, 65199890, 130399780]

約数ペア:

[(1, 130399780), (2, 65199890), (4, 32599945), (5, 26079956), (7, 18628540), (10, 13039978), (14, 9314270), (20, 6519989), (28, 4657135), (35, 3725708), (49, 2661220), (70, 1862854), (98, 1330610), (140, 931427), (196, 665305), (245, 532244), (271, 481180), (490, 266122), (491, 265580), (542, 240590), (980, 133061), (982, 132790), (1084, 120295), (1355, 96236), (1897, 68740), (1964, 66395), (2455, 53116), (2710, 48118), (3437, 37940), (3794, 34370), (4910, 26558), (5420, 24059), (6874, 18970), (7588, 17185), (9485, 13748), (9820, 13279)]