20299797

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 15343083

約数列:

[1, 3, 7, 9, 21, 29, 41, 63, 87, 123, 203, 261, 271, 287, 369, 609, 813, 861, 1189, 1827, 1897, 2439, 2583, 3567, 5691, 7859, 8323, 10701, 11111, 17073, 23577, 24969, 33333, 55013, 70731, 74907, 77777, 99999, 165039, 233331, 322219, 495117, 699993, 966657, 2255533, 2899971, 6766599, 20299797]

約数ペア:

[(1, 20299797), (3, 6766599), (7, 2899971), (9, 2255533), (21, 966657), (29, 699993), (41, 495117), (63, 322219), (87, 233331), (123, 165039), (203, 99999), (261, 77777), (271, 74907), (287, 70731), (369, 55013), (609, 33333), (813, 24969), (861, 23577), (1189, 17073), (1827, 11111), (1897, 10701), (2439, 8323), (2583, 7859), (3567, 5691)]