19911556

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{709}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 42940800

約数和(自身を除く): 23029244

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 59, 68, 118, 119, 236, 238, 413, 476, 709, 826, 1003, 1418, 1652, 2006, 2836, 4012, 4963, 7021, 9926, 12053, 14042, 19852, 24106, 28084, 41831, 48212, 83662, 84371, 167324, 168742, 292817, 337484, 585634, 711127, 1171268, 1422254, 2844508, 4977889, 9955778, 19911556]

約数ペア:

[(1, 19911556), (2, 9955778), (4, 4977889), (7, 2844508), (14, 1422254), (17, 1171268), (28, 711127), (34, 585634), (59, 337484), (68, 292817), (118, 168742), (119, 167324), (236, 84371), (238, 83662), (413, 48212), (476, 41831), (709, 28084), (826, 24106), (1003, 19852), (1418, 14042), (1652, 12053), (2006, 9926), (2836, 7021), (4012, 4963)]