20286320

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1061}}^1$

素因数の和:1313

約数の個数: 40

約数和(自身を含む): 47407680

約数和(自身を除く): 27121360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1061, 1195, 1912, 2122, 2390, 3824, 4244, 4780, 5305, 8488, 9560, 10610, 16976, 19120, 21220, 42440, 84880, 253579, 507158, 1014316, 1267895, 2028632, 2535790, 4057264, 5071580, 10143160, 20286320]

約数ペア:

[(1, 20286320), (2, 10143160), (4, 5071580), (5, 4057264), (8, 2535790), (10, 2028632), (16, 1267895), (20, 1014316), (40, 507158), (80, 253579), (239, 84880), (478, 42440), (956, 21220), (1061, 19120), (1195, 16976), (1912, 10610), (2122, 9560), (2390, 8488), (3824, 5305), (4244, 4780)]