81557721

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{281}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 143589888

約数和(自身を除く): 62032167

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 271, 281, 357, 813, 843, 1071, 1897, 1967, 2439, 2529, 4607, 4777, 5691, 5901, 13821, 14331, 17073, 17703, 32249, 33439, 41463, 42993, 76151, 96747, 100317, 228453, 290241, 300951, 533057, 685359, 1294567, 1599171, 3883701, 4797513, 9061969, 11651103, 27185907, 81557721]

約数ペア:

[(1, 81557721), (3, 27185907), (7, 11651103), (9, 9061969), (17, 4797513), (21, 3883701), (51, 1599171), (63, 1294567), (119, 685359), (153, 533057), (271, 300951), (281, 290241), (357, 228453), (813, 100317), (843, 96747), (1071, 76151), (1897, 42993), (1967, 41463), (2439, 33439), (2529, 32249), (4607, 17703), (4777, 17073), (5691, 14331), (5901, 13821)]