28312720

素因数分解:

$2^4\times 5^1\times {\mathrm{547}}^1\times {\mathrm{647}}^1$

素因数の和:1207

約数の個数: 40

約数和(自身を含む): 66049344

約数和(自身を除く): 37736624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 547, 647, 1094, 1294, 2188, 2588, 2735, 3235, 4376, 5176, 5470, 6470, 8752, 10352, 10940, 12940, 21880, 25880, 43760, 51760, 353909, 707818, 1415636, 1769545, 2831272, 3539090, 5662544, 7078180, 14156360, 28312720]

約数ペア:

[(1, 28312720), (2, 14156360), (4, 7078180), (5, 5662544), (8, 3539090), (10, 2831272), (16, 1769545), (20, 1415636), (40, 707818), (80, 353909), (547, 51760), (647, 43760), (1094, 25880), (1294, 21880), (2188, 12940), (2588, 10940), (2735, 10352), (3235, 8752), (4376, 6470), (5176, 5470)]