2181116

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1277}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 4437216

約数和(自身を除く): 2256100

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1277, 1708, 2554, 5108, 8939, 17878, 35756, 77897, 155794, 311588, 545279, 1090558, 2181116]

約数ペア:

[(1, 2181116), (2, 1090558), (4, 545279), (7, 311588), (14, 155794), (28, 77897), (61, 35756), (122, 17878), (244, 8939), (427, 5108), (854, 2554), (1277, 1708)]