81311139

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1091}}^1$

素因数の和:1137

約数の個数: 54

約数和(自身を含む): 148078476

約数和(自身を除く): 66767337

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 169, 273, 441, 507, 637, 819, 1091, 1183, 1521, 1911, 3273, 3549, 5733, 7637, 8281, 9819, 10647, 14183, 22911, 24843, 42549, 53459, 68733, 74529, 99281, 127647, 160377, 184379, 297843, 481131, 553137, 694967, 893529, 1290653, 1659411, 2084901, 3871959, 6254703, 9034571, 11615877, 27103713, 81311139]

約数ペア:

[(1, 81311139), (3, 27103713), (7, 11615877), (9, 9034571), (13, 6254703), (21, 3871959), (39, 2084901), (49, 1659411), (63, 1290653), (91, 893529), (117, 694967), (147, 553137), (169, 481131), (273, 297843), (441, 184379), (507, 160377), (637, 127647), (819, 99281), (1091, 74529), (1183, 68733), (1521, 53459), (1911, 42549), (3273, 24843), (3549, 22911), (5733, 14183), (7637, 10647), (8281, 9819)]