21291710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4721}}^1$

素因数の和:4780

約数の個数: 32

約数和(自身を含む): 42837984

約数和(自身を除く): 21546274

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4510, 4721, 9442, 23605, 47210, 51931, 103862, 193561, 259655, 387122, 519310, 967805, 1935610, 2129171, 4258342, 10645855, 21291710]

約数ペア:

[(1, 21291710), (2, 10645855), (5, 4258342), (10, 2129171), (11, 1935610), (22, 967805), (41, 519310), (55, 387122), (82, 259655), (110, 193561), (205, 103862), (410, 51931), (451, 47210), (902, 23605), (2255, 9442), (4510, 4721)]