81145280

素因数分解:

$2^6\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1061}}^1$

素因数の和:1317

約数の個数: 56

約数和(自身を含む): 194218560

約数和(自身を除く): 113073280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 239, 320, 478, 956, 1061, 1195, 1912, 2122, 2390, 3824, 4244, 4780, 5305, 7648, 8488, 9560, 10610, 15296, 16976, 19120, 21220, 33952, 38240, 42440, 67904, 76480, 84880, 169760, 253579, 339520, 507158, 1014316, 1267895, 2028632, 2535790, 4057264, 5071580, 8114528, 10143160, 16229056, 20286320, 40572640, 81145280]

約数ペア:

[(1, 81145280), (2, 40572640), (4, 20286320), (5, 16229056), (8, 10143160), (10, 8114528), (16, 5071580), (20, 4057264), (32, 2535790), (40, 2028632), (64, 1267895), (80, 1014316), (160, 507158), (239, 339520), (320, 253579), (478, 169760), (956, 84880), (1061, 76480), (1195, 67904), (1912, 42440), (2122, 38240), (2390, 33952), (3824, 21220), (4244, 19120), (4780, 16976), (5305, 15296), (7648, 10610), (8488, 9560)]