220755213

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2801}}^1$

素因数の和:2959

約数の個数: 40

約数和(自身を含む): 379727040

約数和(自身を除く): 158971827

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 417, 567, 973, 1251, 2801, 2919, 3753, 8403, 8757, 11259, 19607, 25209, 26271, 58821, 75627, 78813, 176463, 226881, 389339, 529389, 1168017, 1588167, 2725373, 3504051, 8176119, 10512153, 24528357, 31536459, 73585071, 220755213]

約数ペア:

[(1, 220755213), (3, 73585071), (7, 31536459), (9, 24528357), (21, 10512153), (27, 8176119), (63, 3504051), (81, 2725373), (139, 1588167), (189, 1168017), (417, 529389), (567, 389339), (973, 226881), (1251, 176463), (2801, 78813), (2919, 75627), (3753, 58821), (8403, 26271), (8757, 25209), (11259, 19607)]