20984488

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{6143}}^1$

素因数の和:6217

約数の個数: 32

約数和(自身を含む): 45711360

約数和(自身を除く): 24726872

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 6143, 12286, 24572, 43001, 49144, 86002, 172004, 344008, 374723, 749446, 1498892, 2623061, 2997784, 5246122, 10492244, 20984488]

約数ペア:

[(1, 20984488), (2, 10492244), (4, 5246122), (7, 2997784), (8, 2623061), (14, 1498892), (28, 749446), (56, 374723), (61, 344008), (122, 172004), (244, 86002), (427, 49144), (488, 43001), (854, 24572), (1708, 12286), (3416, 6143)]