21506576

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14771}}^1$

素因数の和:14799

約数の個数: 40

約数和(自身を含む): 51288384

約数和(自身を除く): 29781808

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14771, 29542, 59084, 103397, 118168, 192023, 206794, 236336, 384046, 413588, 768092, 827176, 1344161, 1536184, 1654352, 2688322, 3072368, 5376644, 10753288, 21506576]

約数ペア:

[(1, 21506576), (2, 10753288), (4, 5376644), (7, 3072368), (8, 2688322), (13, 1654352), (14, 1536184), (16, 1344161), (26, 827176), (28, 768092), (52, 413588), (56, 384046), (91, 236336), (104, 206794), (112, 192023), (182, 118168), (208, 103397), (364, 59084), (728, 29542), (1456, 14771)]