19907538

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 47511552

約数和(自身を除く): 27604014

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 73, 86, 129, 146, 151, 219, 258, 301, 302, 438, 453, 511, 602, 903, 906, 1022, 1057, 1533, 1806, 2114, 3066, 3139, 3171, 6278, 6342, 6493, 9417, 11023, 12986, 18834, 19479, 21973, 22046, 33069, 38958, 43946, 45451, 65919, 66138, 77161, 90902, 131838, 136353, 154322, 231483, 272706, 462966, 473989, 947978, 1421967, 2843934, 3317923, 6635846, 9953769, 19907538]

約数ペア:

[(1, 19907538), (2, 9953769), (3, 6635846), (6, 3317923), (7, 2843934), (14, 1421967), (21, 947978), (42, 473989), (43, 462966), (73, 272706), (86, 231483), (129, 154322), (146, 136353), (151, 131838), (219, 90902), (258, 77161), (301, 66138), (302, 65919), (438, 45451), (453, 43946), (511, 38958), (602, 33069), (903, 22046), (906, 21973), (1022, 19479), (1057, 18834), (1533, 12986), (1806, 11023), (2114, 9417), (3066, 6493), (3139, 6342), (3171, 6278)]