21820911

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3217}}^1$

素因数の和:3263

約数の個数: 32

約数和(自身を含む): 37071360

約数和(自身を除く): 15250449

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 3217, 6783, 9651, 22519, 54689, 61123, 67557, 164067, 183369, 382823, 427861, 1039091, 1148469, 1283583, 3117273, 7273637, 21820911]

約数ペア:

[(1, 21820911), (3, 7273637), (7, 3117273), (17, 1283583), (19, 1148469), (21, 1039091), (51, 427861), (57, 382823), (119, 183369), (133, 164067), (323, 67557), (357, 61123), (399, 54689), (969, 22519), (2261, 9651), (3217, 6783)]