19879804

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 42219520

約数和(自身を除く): 22339716

約数列:

[1, 2, 4, 7, 14, 28, 31, 37, 62, 74, 124, 148, 217, 259, 434, 518, 619, 868, 1036, 1147, 1238, 2294, 2476, 4333, 4588, 8029, 8666, 16058, 17332, 19189, 22903, 32116, 38378, 45806, 76756, 91612, 134323, 160321, 268646, 320642, 537292, 641284, 709993, 1419986, 2839972, 4969951, 9939902, 19879804]

約数ペア:

[(1, 19879804), (2, 9939902), (4, 4969951), (7, 2839972), (14, 1419986), (28, 709993), (31, 641284), (37, 537292), (62, 320642), (74, 268646), (124, 160321), (148, 134323), (217, 91612), (259, 76756), (434, 45806), (518, 38378), (619, 32116), (868, 22903), (1036, 19189), (1147, 17332), (1238, 16058), (2294, 8666), (2476, 8029), (4333, 4588)]