20905304

素因数分解:

$2^3\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1549}}^1$

素因数の和:1803

約数の個数: 32

約数和(自身を含む): 45012000

約数和(自身を除く): 24106696

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 241, 482, 964, 1549, 1687, 1928, 3098, 3374, 6196, 6748, 10843, 12392, 13496, 21686, 43372, 86744, 373309, 746618, 1493236, 2613163, 2986472, 5226326, 10452652, 20905304]

約数ペア:

[(1, 20905304), (2, 10452652), (4, 5226326), (7, 2986472), (8, 2613163), (14, 1493236), (28, 746618), (56, 373309), (241, 86744), (482, 43372), (964, 21686), (1549, 13496), (1687, 12392), (1928, 10843), (3098, 6748), (3374, 6196)]