20480616

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{21881}}^1$

素因数の和:21906

約数の個数: 48

約数和(自身を含む): 59737860

約数和(自身を除く): 39257244

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 21881, 43762, 65643, 87524, 131286, 175048, 196929, 262572, 284453, 393858, 525144, 568906, 787716, 853359, 1137812, 1575432, 1706718, 2275624, 2560077, 3413436, 5120154, 6826872, 10240308, 20480616]

約数ペア:

[(1, 20480616), (2, 10240308), (3, 6826872), (4, 5120154), (6, 3413436), (8, 2560077), (9, 2275624), (12, 1706718), (13, 1575432), (18, 1137812), (24, 853359), (26, 787716), (36, 568906), (39, 525144), (52, 393858), (72, 284453), (78, 262572), (104, 196929), (117, 175048), (156, 131286), (234, 87524), (312, 65643), (468, 43762), (936, 21881)]