80438180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{947}}^1$

素因数の和:1124

約数の個数: 48

約数和(自身を含む): 175827456

約数和(自身を除く): 95389276

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 274, 310, 548, 620, 685, 947, 1370, 1894, 2740, 3788, 4247, 4735, 8494, 9470, 16988, 18940, 21235, 29357, 42470, 58714, 84940, 117428, 129739, 146785, 259478, 293570, 518956, 587140, 648695, 1297390, 2594780, 4021909, 8043818, 16087636, 20109545, 40219090, 80438180]

約数ペア:

[(1, 80438180), (2, 40219090), (4, 20109545), (5, 16087636), (10, 8043818), (20, 4021909), (31, 2594780), (62, 1297390), (124, 648695), (137, 587140), (155, 518956), (274, 293570), (310, 259478), (548, 146785), (620, 129739), (685, 117428), (947, 84940), (1370, 58714), (1894, 42470), (2740, 29357), (3788, 21235), (4247, 18940), (4735, 16988), (8494, 9470)]