21178060

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28619}}^1$

素因数の和:28665

約数の個数: 24

約数和(自身を含む): 45677520

約数和(自身を除く): 24499460

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28619, 57238, 114476, 143095, 286190, 572380, 1058903, 2117806, 4235612, 5294515, 10589030, 21178060]

約数ペア:

[(1, 21178060), (2, 10589030), (4, 5294515), (5, 4235612), (10, 2117806), (20, 1058903), (37, 572380), (74, 286190), (148, 143095), (185, 114476), (370, 57238), (740, 28619)]