21897540

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1931}}^1$

素因数の和:1959

約数の個数: 120

約数和(自身を含む): 78547392

約数和(自身を除く): 56649852

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 1931, 2268, 2835, 3780, 3862, 5670, 5793, 7724, 9655, 11340, 11586, 13517, 17379, 19310, 23172, 27034, 28965, 34758, 38620, 40551, 52137, 54068, 57930, 67585, 69516, 81102, 86895, 104274, 115860, 121653, 135170, 156411, 162204, 173790, 202755, 208548, 243306, 260685, 270340, 312822, 347580, 364959, 405510, 486612, 521370, 608265, 625644, 729918, 782055, 811020, 1042740, 1094877, 1216530, 1459836, 1564110, 1824795, 2189754, 2433060, 3128220, 3649590, 4379508, 5474385, 7299180, 10948770, 21897540]

約数ペア:

[(1, 21897540), (2, 10948770), (3, 7299180), (4, 5474385), (5, 4379508), (6, 3649590), (7, 3128220), (9, 2433060), (10, 2189754), (12, 1824795), (14, 1564110), (15, 1459836), (18, 1216530), (20, 1094877), (21, 1042740), (27, 811020), (28, 782055), (30, 729918), (35, 625644), (36, 608265), (42, 521370), (45, 486612), (54, 405510), (60, 364959), (63, 347580), (70, 312822), (81, 270340), (84, 260685), (90, 243306), (105, 208548), (108, 202755), (126, 173790), (135, 162204), (140, 156411), (162, 135170), (180, 121653), (189, 115860), (210, 104274), (252, 86895), (270, 81102), (315, 69516), (324, 67585), (378, 57930), (405, 54068), (420, 52137), (540, 40551), (567, 38620), (630, 34758), (756, 28965), (810, 27034), (945, 23172), (1134, 19310), (1260, 17379), (1620, 13517), (1890, 11586), (1931, 11340), (2268, 9655), (2835, 7724), (3780, 5793), (3862, 5670)]