20512487988

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{317}}^1\times {\mathrm{61981}}^1$

素因数の和:62337

約数の個数: 72

約数和(自身を含む): 53809053480

約数和(自身を除く): 33296565492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 174, 261, 317, 348, 522, 634, 951, 1044, 1268, 1902, 2853, 3804, 5706, 9193, 11412, 18386, 27579, 36772, 55158, 61981, 82737, 110316, 123962, 165474, 185943, 247924, 330948, 371886, 557829, 743772, 1115658, 1797449, 2231316, 3594898, 5392347, 7189796, 10784694, 16177041, 19647977, 21569388, 32354082, 39295954, 58943931, 64708164, 78591908, 117887862, 176831793, 235775724, 353663586, 569791333, 707327172, 1139582666, 1709373999, 2279165332, 3418747998, 5128121997, 6837495996, 10256243994, 20512487988]

約数ペア:

[(1, 20512487988), (2, 10256243994), (3, 6837495996), (4, 5128121997), (6, 3418747998), (9, 2279165332), (12, 1709373999), (18, 1139582666), (29, 707327172), (36, 569791333), (58, 353663586), (87, 235775724), (116, 176831793), (174, 117887862), (261, 78591908), (317, 64708164), (348, 58943931), (522, 39295954), (634, 32354082), (951, 21569388), (1044, 19647977), (1268, 16177041), (1902, 10784694), (2853, 7189796), (3804, 5392347), (5706, 3594898), (9193, 2231316), (11412, 1797449), (18386, 1115658), (27579, 743772), (36772, 557829), (55158, 371886), (61981, 330948), (82737, 247924), (110316, 185943), (123962, 165474)]