20494474

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 42819840

約数和(自身を除く): 22325366

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 29, 58, 77, 91, 143, 154, 182, 203, 286, 319, 353, 377, 406, 638, 706, 754, 1001, 2002, 2233, 2471, 2639, 3883, 4147, 4466, 4589, 4942, 5278, 7766, 8294, 9178, 10237, 20474, 27181, 29029, 32123, 50479, 54362, 58058, 64246, 71659, 100958, 112607, 133081, 143318, 225214, 266162, 353353, 706706, 788249, 931567, 1463891, 1576498, 1863134, 2927782, 10247237, 20494474]

約数ペア:

[(1, 20494474), (2, 10247237), (7, 2927782), (11, 1863134), (13, 1576498), (14, 1463891), (22, 931567), (26, 788249), (29, 706706), (58, 353353), (77, 266162), (91, 225214), (143, 143318), (154, 133081), (182, 112607), (203, 100958), (286, 71659), (319, 64246), (353, 58058), (377, 54362), (406, 50479), (638, 32123), (706, 29029), (754, 27181), (1001, 20474), (2002, 10237), (2233, 9178), (2471, 8294), (2639, 7766), (3883, 5278), (4147, 4942), (4466, 4589)]