21880077

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 10222323

約数列:

[1, 3, 19, 43, 57, 79, 113, 129, 237, 339, 817, 1501, 2147, 2451, 3397, 4503, 4859, 6441, 8927, 10191, 14577, 26781, 64543, 92321, 169613, 193629, 276963, 383861, 508839, 1151583, 7293359, 21880077]

約数ペア:

[(1, 21880077), (3, 7293359), (19, 1151583), (43, 508839), (57, 383861), (79, 276963), (113, 193629), (129, 169613), (237, 92321), (339, 64543), (817, 26781), (1501, 14577), (2147, 10191), (2451, 8927), (3397, 6441), (4503, 4859)]