21026841

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1013}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 33291648

約数和(自身を除く): 12264807

約数列:

[1, 3, 11, 17, 33, 37, 51, 111, 187, 407, 561, 629, 1013, 1221, 1887, 3039, 6919, 11143, 17221, 20757, 33429, 37481, 51663, 112443, 189431, 412291, 568293, 637177, 1236873, 1911531, 7008947, 21026841]

約数ペア:

[(1, 21026841), (3, 7008947), (11, 1911531), (17, 1236873), (33, 637177), (37, 568293), (51, 412291), (111, 189431), (187, 112443), (407, 51663), (561, 37481), (629, 33429), (1013, 20757), (1221, 17221), (1887, 11143), (3039, 6919)]