20542005

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:113

約数の個数: 96

約数和(自身を含む): 42456960

約数和(自身を除く): 21914955

約数列:

[1, 3, 5, 9, 11, 15, 27, 29, 33, 45, 53, 55, 81, 87, 99, 135, 145, 159, 165, 243, 261, 265, 297, 319, 405, 435, 477, 495, 583, 783, 795, 891, 957, 1215, 1305, 1431, 1485, 1537, 1595, 1749, 2349, 2385, 2673, 2871, 2915, 3915, 4293, 4455, 4611, 4785, 5247, 7047, 7155, 7685, 8613, 8745, 11745, 12879, 13365, 13833, 14355, 15741, 16907, 21465, 23055, 25839, 26235, 35235, 41499, 43065, 47223, 50721, 64395, 69165, 77517, 78705, 84535, 124497, 129195, 141669, 152163, 207495, 236115, 253605, 373491, 387585, 456489, 622485, 708345, 760815, 1369467, 1867455, 2282445, 4108401, 6847335, 20542005]

約数ペア:

[(1, 20542005), (3, 6847335), (5, 4108401), (9, 2282445), (11, 1867455), (15, 1369467), (27, 760815), (29, 708345), (33, 622485), (45, 456489), (53, 387585), (55, 373491), (81, 253605), (87, 236115), (99, 207495), (135, 152163), (145, 141669), (159, 129195), (165, 124497), (243, 84535), (261, 78705), (265, 77517), (297, 69165), (319, 64395), (405, 50721), (435, 47223), (477, 43065), (495, 41499), (583, 35235), (783, 26235), (795, 25839), (891, 23055), (957, 21465), (1215, 16907), (1305, 15741), (1431, 14355), (1485, 13833), (1537, 13365), (1595, 12879), (1749, 11745), (2349, 8745), (2385, 8613), (2673, 7685), (2871, 7155), (2915, 7047), (3915, 5247), (4293, 4785), (4455, 4611)]