21277452

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{577}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 56967680

約数和(自身を除く): 35690228

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 439, 577, 878, 1154, 1317, 1731, 1756, 2308, 2634, 3073, 3462, 4039, 5268, 6146, 6924, 8078, 9219, 12117, 12292, 16156, 18438, 24234, 36876, 48468, 253303, 506606, 759909, 1013212, 1519818, 1773121, 3039636, 3546242, 5319363, 7092484, 10638726, 21277452]

約数ペア:

[(1, 21277452), (2, 10638726), (3, 7092484), (4, 5319363), (6, 3546242), (7, 3039636), (12, 1773121), (14, 1519818), (21, 1013212), (28, 759909), (42, 506606), (84, 253303), (439, 48468), (577, 36876), (878, 24234), (1154, 18438), (1317, 16156), (1731, 12292), (1756, 12117), (2308, 9219), (2634, 8078), (3073, 6924), (3462, 6146), (4039, 5268)]