20741391

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 13628529

約数列:

[1, 3, 9, 11, 33, 53, 59, 67, 99, 159, 177, 201, 477, 531, 583, 603, 649, 737, 1749, 1947, 2211, 3127, 3551, 3953, 5247, 5841, 6633, 9381, 10653, 11859, 28143, 31959, 34397, 35577, 39061, 43483, 103191, 117183, 130449, 209509, 309573, 351549, 391347, 628527, 1885581, 2304599, 6913797, 20741391]

約数ペア:

[(1, 20741391), (3, 6913797), (9, 2304599), (11, 1885581), (33, 628527), (53, 391347), (59, 351549), (67, 309573), (99, 209509), (159, 130449), (177, 117183), (201, 103191), (477, 43483), (531, 39061), (583, 35577), (603, 34397), (649, 31959), (737, 28143), (1749, 11859), (1947, 10653), (2211, 9381), (3127, 6633), (3551, 5841), (3953, 5247)]