81309040

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{347}}^1$

素因数の和:490

約数の個数: 80

約数和(自身を含む): 198067680

約数和(自身を除く): 116758640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 101, 116, 145, 202, 232, 290, 347, 404, 464, 505, 580, 694, 808, 1010, 1160, 1388, 1616, 1735, 2020, 2320, 2776, 2929, 3470, 4040, 5552, 5858, 6940, 8080, 10063, 11716, 13880, 14645, 20126, 23432, 27760, 29290, 35047, 40252, 46864, 50315, 58580, 70094, 80504, 100630, 117160, 140188, 161008, 175235, 201260, 234320, 280376, 350470, 402520, 560752, 700940, 805040, 1016363, 1401880, 2032726, 2803760, 4065452, 5081815, 8130904, 10163630, 16261808, 20327260, 40654520, 81309040]

約数ペア:

[(1, 81309040), (2, 40654520), (4, 20327260), (5, 16261808), (8, 10163630), (10, 8130904), (16, 5081815), (20, 4065452), (29, 2803760), (40, 2032726), (58, 1401880), (80, 1016363), (101, 805040), (116, 700940), (145, 560752), (202, 402520), (232, 350470), (290, 280376), (347, 234320), (404, 201260), (464, 175235), (505, 161008), (580, 140188), (694, 117160), (808, 100630), (1010, 80504), (1160, 70094), (1388, 58580), (1616, 50315), (1735, 46864), (2020, 40252), (2320, 35047), (2776, 29290), (2929, 27760), (3470, 23432), (4040, 20126), (5552, 14645), (5858, 13880), (6940, 11716), (8080, 10063)]