21109473

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{367}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 17468703

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 83, 99, 231, 249, 367, 581, 693, 747, 913, 1101, 1743, 2569, 2739, 3303, 4037, 5229, 6391, 7707, 8217, 12111, 19173, 23121, 28259, 30461, 36333, 57519, 84777, 91383, 213227, 254331, 274149, 335071, 639681, 1005213, 1919043, 2345497, 3015639, 7036491, 21109473]

約数ペア:

[(1, 21109473), (3, 7036491), (7, 3015639), (9, 2345497), (11, 1919043), (21, 1005213), (33, 639681), (63, 335071), (77, 274149), (83, 254331), (99, 213227), (231, 91383), (249, 84777), (367, 57519), (581, 36333), (693, 30461), (747, 28259), (913, 23121), (1101, 19173), (1743, 12111), (2569, 8217), (2739, 7707), (3303, 6391), (4037, 5229)]