19997820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1277}}^1$

素因数の和:1324

約数の個数: 96

約数和(自身を含む): 64411200

約数和(自身を除く): 44413380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 87, 90, 108, 116, 135, 145, 174, 180, 261, 270, 290, 348, 435, 522, 540, 580, 783, 870, 1044, 1277, 1305, 1566, 1740, 2554, 2610, 3132, 3831, 3915, 5108, 5220, 6385, 7662, 7830, 11493, 12770, 15324, 15660, 19155, 22986, 25540, 34479, 37033, 38310, 45972, 57465, 68958, 74066, 76620, 111099, 114930, 137916, 148132, 172395, 185165, 222198, 229860, 333297, 344790, 370330, 444396, 555495, 666594, 689580, 740660, 999891, 1110990, 1333188, 1666485, 1999782, 2221980, 3332970, 3999564, 4999455, 6665940, 9998910, 19997820]

約数ペア:

[(1, 19997820), (2, 9998910), (3, 6665940), (4, 4999455), (5, 3999564), (6, 3332970), (9, 2221980), (10, 1999782), (12, 1666485), (15, 1333188), (18, 1110990), (20, 999891), (27, 740660), (29, 689580), (30, 666594), (36, 555495), (45, 444396), (54, 370330), (58, 344790), (60, 333297), (87, 229860), (90, 222198), (108, 185165), (116, 172395), (135, 148132), (145, 137916), (174, 114930), (180, 111099), (261, 76620), (270, 74066), (290, 68958), (348, 57465), (435, 45972), (522, 38310), (540, 37033), (580, 34479), (783, 25540), (870, 22986), (1044, 19155), (1277, 15660), (1305, 15324), (1566, 12770), (1740, 11493), (2554, 7830), (2610, 7662), (3132, 6385), (3831, 5220), (3915, 5108)]