721091930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{178931}}^1$

素因数の和:178982

約数の個数: 32

約数和(自身を含む): 1442907648

約数和(自身を除く): 721815718

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 178931, 357862, 894655, 1789310, 2326103, 4652206, 5546861, 11093722, 11630515, 23261030, 27734305, 55468610, 72109193, 144218386, 360545965, 721091930]

約数ペア:

[(1, 721091930), (2, 360545965), (5, 144218386), (10, 72109193), (13, 55468610), (26, 27734305), (31, 23261030), (62, 11630515), (65, 11093722), (130, 5546861), (155, 4652206), (310, 2326103), (403, 1789310), (806, 894655), (2015, 357862), (4030, 178931)]