121219120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{991}}^1$

素因数の和:1154

約数の個数: 80

約数和(自身を含む): 309980160

約数和(自身を除く): 188761040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 176, 220, 278, 440, 556, 695, 880, 991, 1112, 1390, 1529, 1982, 2224, 2780, 3058, 3964, 4955, 5560, 6116, 7645, 7928, 9910, 10901, 11120, 12232, 15290, 15856, 19820, 21802, 24464, 30580, 39640, 43604, 54505, 61160, 79280, 87208, 109010, 122320, 137749, 174416, 218020, 275498, 436040, 550996, 688745, 872080, 1101992, 1377490, 1515239, 2203984, 2754980, 3030478, 5509960, 6060956, 7576195, 11019920, 12121912, 15152390, 24243824, 30304780, 60609560, 121219120]

約数ペア:

[(1, 121219120), (2, 60609560), (4, 30304780), (5, 24243824), (8, 15152390), (10, 12121912), (11, 11019920), (16, 7576195), (20, 6060956), (22, 5509960), (40, 3030478), (44, 2754980), (55, 2203984), (80, 1515239), (88, 1377490), (110, 1101992), (139, 872080), (176, 688745), (220, 550996), (278, 436040), (440, 275498), (556, 218020), (695, 174416), (880, 137749), (991, 122320), (1112, 109010), (1390, 87208), (1529, 79280), (1982, 61160), (2224, 54505), (2780, 43604), (3058, 39640), (3964, 30580), (4955, 24464), (5560, 21802), (6116, 19820), (7645, 15856), (7928, 15290), (9910, 12232), (10901, 11120)]