20653955

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 9223165

約数列:

[1, 5, 7, 35, 37, 41, 185, 205, 259, 287, 389, 1295, 1435, 1517, 1945, 2723, 7585, 10619, 13615, 14393, 15949, 53095, 71965, 79745, 100751, 111643, 503755, 558215, 590113, 2950565, 4130791, 20653955]

約数ペア:

[(1, 20653955), (5, 4130791), (7, 2950565), (35, 590113), (37, 558215), (41, 503755), (185, 111643), (205, 100751), (259, 79745), (287, 71965), (389, 53095), (1295, 15949), (1435, 14393), (1517, 13615), (1945, 10619), (2723, 7585)]