21070738

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{4243}}^1$

素因数の和:4449

約数の個数: 16

約数和(自身を含む): 34223616

約数和(自身を除く): 13152878

約数列:

[1, 2, 13, 26, 191, 382, 2483, 4243, 4966, 8486, 55159, 110318, 810413, 1620826, 10535369, 21070738]

約数ペア:

[(1, 21070738), (2, 10535369), (13, 1620826), (26, 810413), (191, 110318), (382, 55159), (2483, 8486), (4243, 4966)]