20957940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{761}}^1$

素因数の和:799

約数の個数: 120

約数和(自身を含む): 69704712

約数和(自身を除く): 48746772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 255, 270, 306, 324, 340, 405, 459, 510, 540, 612, 761, 765, 810, 918, 1020, 1377, 1522, 1530, 1620, 1836, 2283, 2295, 2754, 3044, 3060, 3805, 4566, 4590, 5508, 6849, 6885, 7610, 9132, 9180, 11415, 12937, 13698, 13770, 15220, 20547, 22830, 25874, 27396, 27540, 34245, 38811, 41094, 45660, 51748, 61641, 64685, 68490, 77622, 82188, 102735, 116433, 123282, 129370, 136980, 155244, 194055, 205470, 232866, 246564, 258740, 308205, 349299, 388110, 410940, 465732, 582165, 616410, 698598, 776220, 1047897, 1164330, 1232820, 1397196, 1746495, 2095794, 2328660, 3492990, 4191588, 5239485, 6985980, 10478970, 20957940]

約数ペア:

[(1, 20957940), (2, 10478970), (3, 6985980), (4, 5239485), (5, 4191588), (6, 3492990), (9, 2328660), (10, 2095794), (12, 1746495), (15, 1397196), (17, 1232820), (18, 1164330), (20, 1047897), (27, 776220), (30, 698598), (34, 616410), (36, 582165), (45, 465732), (51, 410940), (54, 388110), (60, 349299), (68, 308205), (81, 258740), (85, 246564), (90, 232866), (102, 205470), (108, 194055), (135, 155244), (153, 136980), (162, 129370), (170, 123282), (180, 116433), (204, 102735), (255, 82188), (270, 77622), (306, 68490), (324, 64685), (340, 61641), (405, 51748), (459, 45660), (510, 41094), (540, 38811), (612, 34245), (761, 27540), (765, 27396), (810, 25874), (918, 22830), (1020, 20547), (1377, 15220), (1522, 13770), (1530, 13698), (1620, 12937), (1836, 11415), (2283, 9180), (2295, 9132), (2754, 7610), (3044, 6885), (3060, 6849), (3805, 5508), (4566, 4590)]