20380490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{743}}^1$

素因数の和:974

約数の個数: 32

約数和(自身を含む): 39747456

約数和(自身を除く): 19366966

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 211, 422, 743, 1055, 1486, 2110, 2743, 3715, 5486, 7430, 9659, 13715, 19318, 27430, 48295, 96590, 156773, 313546, 783865, 1567730, 2038049, 4076098, 10190245, 20380490]

約数ペア:

[(1, 20380490), (2, 10190245), (5, 4076098), (10, 2038049), (13, 1567730), (26, 783865), (65, 313546), (130, 156773), (211, 96590), (422, 48295), (743, 27430), (1055, 19318), (1486, 13715), (2110, 9659), (2743, 7430), (3715, 5486)]