20851493

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 32

約数和(自身を含む): 25401600

約数和(自身を除く): 4550107

約数列:

[1, 13, 19, 29, 41, 71, 247, 377, 533, 551, 779, 923, 1189, 1349, 2059, 2911, 7163, 10127, 15457, 17537, 22591, 26767, 37843, 39121, 55309, 84419, 293683, 508573, 719017, 1097447, 1603961, 20851493]

約数ペア:

[(1, 20851493), (13, 1603961), (19, 1097447), (29, 719017), (41, 508573), (71, 293683), (247, 84419), (377, 55309), (533, 39121), (551, 37843), (779, 26767), (923, 22591), (1189, 17537), (1349, 15457), (2059, 10127), (2911, 7163)]