21689932

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 21420212

約数列:

[1, 2, 4, 11, 22, 44, 53, 71, 106, 131, 142, 212, 262, 284, 524, 583, 781, 1166, 1441, 1562, 2332, 2882, 3124, 3763, 5764, 6943, 7526, 9301, 13886, 15052, 18602, 27772, 37204, 41393, 76373, 82786, 102311, 152746, 165572, 204622, 305492, 409244, 492953, 985906, 1971812, 5422483, 10844966, 21689932]

約数ペア:

[(1, 21689932), (2, 10844966), (4, 5422483), (11, 1971812), (22, 985906), (44, 492953), (53, 409244), (71, 305492), (106, 204622), (131, 165572), (142, 152746), (212, 102311), (262, 82786), (284, 76373), (524, 41393), (583, 37204), (781, 27772), (1166, 18602), (1441, 15052), (1562, 13886), (2332, 9301), (2882, 7526), (3124, 6943), (3763, 5764)]