81181730

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^2\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 72

約数和(自身を含む): 176941908

約数和(自身を除く): 95760178

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 197, 203, 245, 290, 394, 406, 490, 841, 985, 1015, 1379, 1421, 1682, 1970, 2030, 2758, 2842, 4205, 5713, 5887, 6895, 7105, 8410, 9653, 11426, 11774, 13790, 14210, 19306, 28565, 29435, 39991, 41209, 48265, 57130, 58870, 79982, 82418, 96530, 165677, 199955, 206045, 279937, 331354, 399910, 412090, 559874, 828385, 1159739, 1399685, 1656770, 2319478, 2799370, 5798695, 8118173, 11597390, 16236346, 40590865, 81181730]

約数ペア:

[(1, 81181730), (2, 40590865), (5, 16236346), (7, 11597390), (10, 8118173), (14, 5798695), (29, 2799370), (35, 2319478), (49, 1656770), (58, 1399685), (70, 1159739), (98, 828385), (145, 559874), (197, 412090), (203, 399910), (245, 331354), (290, 279937), (394, 206045), (406, 199955), (490, 165677), (841, 96530), (985, 82418), (1015, 79982), (1379, 58870), (1421, 57130), (1682, 48265), (1970, 41209), (2030, 39991), (2758, 29435), (2842, 28565), (4205, 19306), (5713, 14210), (5887, 13790), (6895, 11774), (7105, 11426), (8410, 9653)]