31451660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 68916960

約数和(自身を除く): 37465300

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 211, 257, 290, 422, 514, 580, 844, 1028, 1055, 1285, 2110, 2570, 4220, 5140, 6119, 7453, 12238, 14906, 24476, 29812, 30595, 37265, 54227, 61190, 74530, 108454, 122380, 149060, 216908, 271135, 542270, 1084540, 1572583, 3145166, 6290332, 7862915, 15725830, 31451660]

約数ペア:

[(1, 31451660), (2, 15725830), (4, 7862915), (5, 6290332), (10, 3145166), (20, 1572583), (29, 1084540), (58, 542270), (116, 271135), (145, 216908), (211, 149060), (257, 122380), (290, 108454), (422, 74530), (514, 61190), (580, 54227), (844, 37265), (1028, 30595), (1055, 29812), (1285, 24476), (2110, 14906), (2570, 12238), (4220, 7453), (5140, 6119)]