21088620

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{797}}^1$

素因数の和:829

約数の個数: 144

約数和(自身を含む): 76416480

約数和(自身を除く): 55327860

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, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 797, 882, 945, 980, 1260, 1323, 1470, 1594, 1764, 1890, 2205, 2391, 2646, 2940, 3188, 3780, 3985, 4410, 4782, 5292, 5579, 6615, 7173, 7970, 8820, 9564, 11158, 11955, 13230, 14346, 15940, 16737, 21519, 22316, 23910, 26460, 27895, 28692, 33474, 35865, 39053, 43038, 47820, 50211, 55790, 66948, 71730, 78106, 83685, 86076, 100422, 107595, 111580, 117159, 143460, 150633, 156212, 167370, 195265, 200844, 215190, 234318, 251055, 301266, 334740, 351477, 390530, 430380, 468636, 502110, 585795, 602532, 702954, 753165, 781060, 1004220, 1054431, 1171590, 1405908, 1506330, 1757385, 2108862, 2343180, 3012660, 3514770, 4217724, 5272155, 7029540, 10544310, 21088620]

約数ペア:

[(1, 21088620), (2, 10544310), (3, 7029540), (4, 5272155), (5, 4217724), (6, 3514770), (7, 3012660), (9, 2343180), (10, 2108862), (12, 1757385), (14, 1506330), (15, 1405908), (18, 1171590), (20, 1054431), (21, 1004220), (27, 781060), (28, 753165), (30, 702954), (35, 602532), (36, 585795), (42, 502110), (45, 468636), (49, 430380), (54, 390530), (60, 351477), (63, 334740), (70, 301266), (84, 251055), (90, 234318), (98, 215190), (105, 200844), (108, 195265), (126, 167370), (135, 156212), (140, 150633), (147, 143460), (180, 117159), (189, 111580), (196, 107595), (210, 100422), (245, 86076), (252, 83685), (270, 78106), (294, 71730), (315, 66948), (378, 55790), (420, 50211), (441, 47820), (490, 43038), (540, 39053), (588, 35865), (630, 33474), (735, 28692), (756, 27895), (797, 26460), (882, 23910), (945, 22316), (980, 21519), (1260, 16737), (1323, 15940), (1470, 14346), (1594, 13230), (1764, 11955), (1890, 11158), (2205, 9564), (2391, 8820), (2646, 7970), (2940, 7173), (3188, 6615), (3780, 5579), (3985, 5292), (4410, 4782)]