31239819

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 54812160

約数和(自身を除く): 23572341

約数列:

[1, 3, 9, 13, 19, 23, 39, 47, 57, 69, 117, 141, 169, 171, 207, 247, 299, 423, 437, 507, 611, 741, 893, 897, 1081, 1311, 1521, 1833, 2223, 2679, 2691, 3211, 3243, 3887, 3933, 5499, 5681, 7943, 8037, 9633, 9729, 11609, 11661, 14053, 17043, 20539, 23829, 28899, 34827, 34983, 42159, 51129, 61617, 71487, 73853, 104481, 126477, 150917, 182689, 184851, 221559, 267007, 452751, 548067, 664677, 801021, 1358253, 1644201, 2403063, 3471091, 10413273, 31239819]

約数ペア:

[(1, 31239819), (3, 10413273), (9, 3471091), (13, 2403063), (19, 1644201), (23, 1358253), (39, 801021), (47, 664677), (57, 548067), (69, 452751), (117, 267007), (141, 221559), (169, 184851), (171, 182689), (207, 150917), (247, 126477), (299, 104481), (423, 73853), (437, 71487), (507, 61617), (611, 51129), (741, 42159), (893, 34983), (897, 34827), (1081, 28899), (1311, 23829), (1521, 20539), (1833, 17043), (2223, 14053), (2679, 11661), (2691, 11609), (3211, 9729), (3243, 9633), (3887, 8037), (3933, 7943), (5499, 5681)]