81620476

素因数分解:

$2^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{4679}}^1$

素因数の和:4786

約数の個数: 36

約数和(自身を含む): 168058800

約数和(自身を除く): 86438324

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 356, 623, 1246, 2492, 4361, 4679, 8722, 9358, 17444, 18716, 32753, 65506, 131012, 229271, 416431, 458542, 832862, 917084, 1665724, 2915017, 5830034, 11660068, 20405119, 40810238, 81620476]

約数ペア:

[(1, 81620476), (2, 40810238), (4, 20405119), (7, 11660068), (14, 5830034), (28, 2915017), (49, 1665724), (89, 917084), (98, 832862), (178, 458542), (196, 416431), (356, 229271), (623, 131012), (1246, 65506), (2492, 32753), (4361, 18716), (4679, 17444), (8722, 9358)]