20905444

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1187}}^1$

素因数の和:1252

約数の個数: 48

約数和(自身を含む): 45505152

約数和(自身を除く): 24599708

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 37, 68, 74, 119, 148, 238, 259, 476, 518, 629, 1036, 1187, 1258, 2374, 2516, 4403, 4748, 8309, 8806, 16618, 17612, 20179, 33236, 40358, 43919, 80716, 87838, 141253, 175676, 282506, 307433, 565012, 614866, 746623, 1229732, 1493246, 2986492, 5226361, 10452722, 20905444]

約数ペア:

[(1, 20905444), (2, 10452722), (4, 5226361), (7, 2986492), (14, 1493246), (17, 1229732), (28, 746623), (34, 614866), (37, 565012), (68, 307433), (74, 282506), (119, 175676), (148, 141253), (238, 87838), (259, 80716), (476, 43919), (518, 40358), (629, 33236), (1036, 20179), (1187, 17612), (1258, 16618), (2374, 8806), (2516, 8309), (4403, 4748)]