81015772

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 155796480

約数和(自身を除く): 74780708

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 124, 137, 251, 274, 502, 548, 589, 1004, 1178, 2356, 2603, 4247, 4769, 5206, 7781, 8494, 9538, 10412, 15562, 16988, 19076, 31124, 34387, 68774, 80693, 137548, 147839, 161386, 295678, 322772, 591356, 653353, 1065997, 1306706, 2131994, 2613412, 4263988, 20253943, 40507886, 81015772]

約数ペア:

[(1, 81015772), (2, 40507886), (4, 20253943), (19, 4263988), (31, 2613412), (38, 2131994), (62, 1306706), (76, 1065997), (124, 653353), (137, 591356), (251, 322772), (274, 295678), (502, 161386), (548, 147839), (589, 137548), (1004, 80693), (1178, 68774), (2356, 34387), (2603, 31124), (4247, 19076), (4769, 16988), (5206, 15562), (7781, 10412), (8494, 9538)]