21505616

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1721}}^1$

素因数の和:1811

約数の個数: 40

約数和(自身を含む): 46122048

約数和(自身を除く): 24616432

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1721, 3124, 3442, 6248, 6884, 12496, 13768, 18931, 27536, 37862, 75724, 122191, 151448, 244382, 302896, 488764, 977528, 1344101, 1955056, 2688202, 5376404, 10752808, 21505616]

約数ペア:

[(1, 21505616), (2, 10752808), (4, 5376404), (8, 2688202), (11, 1955056), (16, 1344101), (22, 977528), (44, 488764), (71, 302896), (88, 244382), (142, 151448), (176, 122191), (284, 75724), (568, 37862), (781, 27536), (1136, 18931), (1562, 13768), (1721, 12496), (3124, 6884), (3442, 6248)]