20688660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6761}}^1$

素因数の和:6793

約数の個数: 72

約数和(自身を含む): 66456936

約数和(自身を除く): 45768276

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6761, 13522, 20283, 27044, 33805, 40566, 60849, 67610, 81132, 101415, 114937, 121698, 135220, 202830, 229874, 243396, 304245, 344811, 405660, 459748, 574685, 608490, 689622, 1034433, 1149370, 1216980, 1379244, 1724055, 2068866, 2298740, 3448110, 4137732, 5172165, 6896220, 10344330, 20688660]

約数ペア:

[(1, 20688660), (2, 10344330), (3, 6896220), (4, 5172165), (5, 4137732), (6, 3448110), (9, 2298740), (10, 2068866), (12, 1724055), (15, 1379244), (17, 1216980), (18, 1149370), (20, 1034433), (30, 689622), (34, 608490), (36, 574685), (45, 459748), (51, 405660), (60, 344811), (68, 304245), (85, 243396), (90, 229874), (102, 202830), (153, 135220), (170, 121698), (180, 114937), (204, 101415), (255, 81132), (306, 67610), (340, 60849), (510, 40566), (612, 33805), (765, 27044), (1020, 20283), (1530, 13522), (3060, 6761)]