28171923

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 42045696

約数和(自身を除く): 13873773

約数列:

[1, 3, 13, 39, 43, 107, 129, 157, 321, 471, 559, 1391, 1677, 2041, 4173, 4601, 6123, 6751, 13803, 16799, 20253, 50397, 59813, 87763, 179439, 218387, 263289, 655161, 722357, 2167071, 9390641, 28171923]

約数ペア:

[(1, 28171923), (3, 9390641), (13, 2167071), (39, 722357), (43, 655161), (107, 263289), (129, 218387), (157, 179439), (321, 87763), (471, 59813), (559, 50397), (1391, 20253), (1677, 16799), (2041, 13803), (4173, 6751), (4601, 6123)]