81499930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 162155520

約数和(自身を除く): 80655590

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 101, 137, 155, 190, 202, 274, 310, 505, 589, 685, 1010, 1178, 1370, 1919, 2603, 2945, 3131, 3838, 4247, 5206, 5890, 6262, 8494, 9595, 13015, 13837, 15655, 19190, 21235, 26030, 27674, 31310, 42470, 59489, 69185, 80693, 118978, 138370, 161386, 262903, 297445, 403465, 428947, 525806, 594890, 806930, 857894, 1314515, 2144735, 2629030, 4289470, 8149993, 16299986, 40749965, 81499930]

約数ペア:

[(1, 81499930), (2, 40749965), (5, 16299986), (10, 8149993), (19, 4289470), (31, 2629030), (38, 2144735), (62, 1314515), (95, 857894), (101, 806930), (137, 594890), (155, 525806), (190, 428947), (202, 403465), (274, 297445), (310, 262903), (505, 161386), (589, 138370), (685, 118978), (1010, 80693), (1178, 69185), (1370, 59489), (1919, 42470), (2603, 31310), (2945, 27674), (3131, 26030), (3838, 21235), (4247, 19190), (5206, 15655), (5890, 13837), (6262, 13015), (8494, 9595)]