18628540

素因数分解:

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

素因数の和:778

約数の個数: 48

約数和(自身を含む): 44964864

約数和(自身を除く): 26336324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 271, 491, 542, 982, 1084, 1355, 1897, 1964, 2455, 2710, 3437, 3794, 4910, 5420, 6874, 7588, 9485, 9820, 13748, 17185, 18970, 34370, 37940, 68740, 133061, 266122, 532244, 665305, 931427, 1330610, 1862854, 2661220, 3725708, 4657135, 9314270, 18628540]

約数ペア:

[(1, 18628540), (2, 9314270), (4, 4657135), (5, 3725708), (7, 2661220), (10, 1862854), (14, 1330610), (20, 931427), (28, 665305), (35, 532244), (70, 266122), (140, 133061), (271, 68740), (491, 37940), (542, 34370), (982, 18970), (1084, 17185), (1355, 13748), (1897, 9820), (1964, 9485), (2455, 7588), (2710, 6874), (3437, 5420), (3794, 4910)]