21555968

素因数分解:

$2^8\times 7^1\times {\mathrm{23}}^1\times {\mathrm{523}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 51410688

約数和(自身を除く): 29854720

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 256, 322, 368, 448, 523, 644, 736, 896, 1046, 1288, 1472, 1792, 2092, 2576, 2944, 3661, 4184, 5152, 5888, 7322, 8368, 10304, 12029, 14644, 16736, 20608, 24058, 29288, 33472, 41216, 48116, 58576, 66944, 84203, 96232, 117152, 133888, 168406, 192464, 234304, 336812, 384928, 468608, 673624, 769856, 937216, 1347248, 1539712, 2694496, 3079424, 5388992, 10777984, 21555968]

約数ペア:

[(1, 21555968), (2, 10777984), (4, 5388992), (7, 3079424), (8, 2694496), (14, 1539712), (16, 1347248), (23, 937216), (28, 769856), (32, 673624), (46, 468608), (56, 384928), (64, 336812), (92, 234304), (112, 192464), (128, 168406), (161, 133888), (184, 117152), (224, 96232), (256, 84203), (322, 66944), (368, 58576), (448, 48116), (523, 41216), (644, 33472), (736, 29288), (896, 24058), (1046, 20608), (1288, 16736), (1472, 14644), (1792, 12029), (2092, 10304), (2576, 8368), (2944, 7322), (3661, 5888), (4184, 5152)]