28887820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{811}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 65888928

約数和(自身を除く): 37001108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 685, 811, 1370, 1622, 1781, 2740, 3244, 3562, 4055, 7124, 8110, 8905, 10543, 16220, 17810, 21086, 35620, 42172, 52715, 105430, 111107, 210860, 222214, 444428, 555535, 1111070, 1444391, 2222140, 2888782, 5777564, 7221955, 14443910, 28887820]

約数ペア:

[(1, 28887820), (2, 14443910), (4, 7221955), (5, 5777564), (10, 2888782), (13, 2222140), (20, 1444391), (26, 1111070), (52, 555535), (65, 444428), (130, 222214), (137, 210860), (260, 111107), (274, 105430), (548, 52715), (685, 42172), (811, 35620), (1370, 21086), (1622, 17810), (1781, 16220), (2740, 10543), (3244, 8905), (3562, 8110), (4055, 7124)]