28271439

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 49420800

約数和(自身を除く): 21149361

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 109, 161, 179, 207, 327, 483, 537, 763, 981, 1253, 1449, 1611, 2289, 2507, 3759, 4117, 6867, 7521, 11277, 12351, 17549, 19511, 22563, 28819, 37053, 52647, 58533, 86457, 136577, 157941, 175599, 259371, 409731, 448753, 1229193, 1346259, 3141271, 4038777, 9423813, 28271439]

約数ペア:

[(1, 28271439), (3, 9423813), (7, 4038777), (9, 3141271), (21, 1346259), (23, 1229193), (63, 448753), (69, 409731), (109, 259371), (161, 175599), (179, 157941), (207, 136577), (327, 86457), (483, 58533), (537, 52647), (763, 37053), (981, 28819), (1253, 22563), (1449, 19511), (1611, 17549), (2289, 12351), (2507, 11277), (3759, 7521), (4117, 6867)]