20989436

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1913}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 39765264

約数和(自身を除く): 18775828

約数列:

[1, 2, 4, 13, 26, 52, 211, 422, 844, 1913, 2743, 3826, 5486, 7652, 10972, 24869, 49738, 99476, 403643, 807286, 1614572, 5247359, 10494718, 20989436]

約数ペア:

[(1, 20989436), (2, 10494718), (4, 5247359), (13, 1614572), (26, 807286), (52, 403643), (211, 99476), (422, 49738), (844, 24869), (1913, 10972), (2743, 7652), (3826, 5486)]