80339540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 172141200

約数和(自身を除く): 91801660

約数列:

[1, 2, 4, 5, 10, 20, 109, 137, 218, 269, 274, 436, 538, 545, 548, 685, 1076, 1090, 1345, 1370, 2180, 2690, 2740, 5380, 14933, 29321, 29866, 36853, 58642, 59732, 73706, 74665, 117284, 146605, 147412, 149330, 184265, 293210, 298660, 368530, 586420, 737060, 4016977, 8033954, 16067908, 20084885, 40169770, 80339540]

約数ペア:

[(1, 80339540), (2, 40169770), (4, 20084885), (5, 16067908), (10, 8033954), (20, 4016977), (109, 737060), (137, 586420), (218, 368530), (269, 298660), (274, 293210), (436, 184265), (538, 149330), (545, 147412), (548, 146605), (685, 117284), (1076, 74665), (1090, 73706), (1345, 59732), (1370, 58642), (2180, 36853), (2690, 29866), (2740, 29321), (5380, 14933)]