128787640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1\times {\mathrm{367}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 300994560

約数和(自身を除く): 172206920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 283, 310, 367, 566, 620, 734, 1132, 1240, 1415, 1468, 1835, 2264, 2830, 2936, 3670, 5660, 7340, 8773, 11320, 11377, 14680, 17546, 22754, 35092, 43865, 45508, 56885, 70184, 87730, 91016, 103861, 113770, 175460, 207722, 227540, 350920, 415444, 455080, 519305, 830888, 1038610, 2077220, 3219691, 4154440, 6439382, 12878764, 16098455, 25757528, 32196910, 64393820, 128787640]

約数ペア:

[(1, 128787640), (2, 64393820), (4, 32196910), (5, 25757528), (8, 16098455), (10, 12878764), (20, 6439382), (31, 4154440), (40, 3219691), (62, 2077220), (124, 1038610), (155, 830888), (248, 519305), (283, 455080), (310, 415444), (367, 350920), (566, 227540), (620, 207722), (734, 175460), (1132, 113770), (1240, 103861), (1415, 91016), (1468, 87730), (1835, 70184), (2264, 56885), (2830, 45508), (2936, 43865), (3670, 35092), (5660, 22754), (7340, 17546), (8773, 14680), (11320, 11377)]