21686154

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2621}}^1$

素因数の和:2830

約数の個数: 32

約数和(自身を含む): 49838976

約数和(自身を除く): 28152822

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 197, 394, 591, 1182, 1379, 2621, 2758, 4137, 5242, 7863, 8274, 15726, 18347, 36694, 55041, 110082, 516337, 1032674, 1549011, 3098022, 3614359, 7228718, 10843077, 21686154]

約数ペア:

[(1, 21686154), (2, 10843077), (3, 7228718), (6, 3614359), (7, 3098022), (14, 1549011), (21, 1032674), (42, 516337), (197, 110082), (394, 55041), (591, 36694), (1182, 18347), (1379, 15726), (2621, 8274), (2758, 7863), (4137, 5242)]