19204240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:320

約数の個数: 80

約数和(自身を含む): 49371840

約数和(自身を除く): 30167600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 157, 176, 220, 278, 314, 440, 556, 628, 695, 785, 880, 1112, 1256, 1390, 1529, 1570, 1727, 2224, 2512, 2780, 3058, 3140, 3454, 5560, 6116, 6280, 6908, 7645, 8635, 11120, 12232, 12560, 13816, 15290, 17270, 21823, 24464, 27632, 30580, 34540, 43646, 61160, 69080, 87292, 109115, 122320, 138160, 174584, 218230, 240053, 349168, 436460, 480106, 872920, 960212, 1200265, 1745840, 1920424, 2400530, 3840848, 4801060, 9602120, 19204240]

約数ペア:

[(1, 19204240), (2, 9602120), (4, 4801060), (5, 3840848), (8, 2400530), (10, 1920424), (11, 1745840), (16, 1200265), (20, 960212), (22, 872920), (40, 480106), (44, 436460), (55, 349168), (80, 240053), (88, 218230), (110, 174584), (139, 138160), (157, 122320), (176, 109115), (220, 87292), (278, 69080), (314, 61160), (440, 43646), (556, 34540), (628, 30580), (695, 27632), (785, 24464), (880, 21823), (1112, 17270), (1256, 15290), (1390, 13816), (1529, 12560), (1570, 12232), (1727, 11120), (2224, 8635), (2512, 7645), (2780, 6908), (3058, 6280), (3140, 6116), (3454, 5560)]