21494044

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{709}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 45087840

約数和(自身を除く): 23593796

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 689, 709, 1166, 1378, 1418, 2332, 2756, 2836, 7579, 7799, 9217, 15158, 15598, 18434, 30316, 31196, 36868, 37577, 75154, 101387, 150308, 202774, 405548, 413347, 488501, 826694, 977002, 1653388, 1954004, 5373511, 10747022, 21494044]

約数ペア:

[(1, 21494044), (2, 10747022), (4, 5373511), (11, 1954004), (13, 1653388), (22, 977002), (26, 826694), (44, 488501), (52, 413347), (53, 405548), (106, 202774), (143, 150308), (212, 101387), (286, 75154), (572, 37577), (583, 36868), (689, 31196), (709, 30316), (1166, 18434), (1378, 15598), (1418, 15158), (2332, 9217), (2756, 7799), (2836, 7579)]