20961468

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1231}}^1$

素因数の和:1295

約数の個数: 72

約数和(自身を含む): 59195136

約数和(自身を除く): 38233668

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 43, 44, 66, 86, 99, 129, 132, 172, 198, 258, 387, 396, 473, 516, 774, 946, 1231, 1419, 1548, 1892, 2462, 2838, 3693, 4257, 4924, 5676, 7386, 8514, 11079, 13541, 14772, 17028, 22158, 27082, 40623, 44316, 52933, 54164, 81246, 105866, 121869, 158799, 162492, 211732, 243738, 317598, 476397, 487476, 582263, 635196, 952794, 1164526, 1746789, 1905588, 2329052, 3493578, 5240367, 6987156, 10480734, 20961468]

約数ペア:

[(1, 20961468), (2, 10480734), (3, 6987156), (4, 5240367), (6, 3493578), (9, 2329052), (11, 1905588), (12, 1746789), (18, 1164526), (22, 952794), (33, 635196), (36, 582263), (43, 487476), (44, 476397), (66, 317598), (86, 243738), (99, 211732), (129, 162492), (132, 158799), (172, 121869), (198, 105866), (258, 81246), (387, 54164), (396, 52933), (473, 44316), (516, 40623), (774, 27082), (946, 22158), (1231, 17028), (1419, 14772), (1548, 13541), (1892, 11079), (2462, 8514), (2838, 7386), (3693, 5676), (4257, 4924)]