21699783

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 38019072

約数和(自身を除く): 16319289

約数列:

[1, 3, 7, 9, 21, 31, 41, 63, 93, 123, 217, 271, 279, 287, 369, 651, 813, 861, 1271, 1897, 1953, 2439, 2583, 3813, 5691, 8401, 8897, 11111, 11439, 17073, 25203, 26691, 33333, 58807, 75609, 77777, 80073, 99999, 176421, 233331, 344441, 529263, 699993, 1033323, 2411087, 3099969, 7233261, 21699783]

約数ペア:

[(1, 21699783), (3, 7233261), (7, 3099969), (9, 2411087), (21, 1033323), (31, 699993), (41, 529263), (63, 344441), (93, 233331), (123, 176421), (217, 99999), (271, 80073), (279, 77777), (287, 75609), (369, 58807), (651, 33333), (813, 26691), (861, 25203), (1271, 17073), (1897, 11439), (1953, 11111), (2439, 8897), (2583, 8401), (3813, 5691)]