21487982

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1979}}^1$

素因数の和:2131

約数の個数: 16

約数和(自身を含む): 33145200

約数和(自身を除く): 11657218

約数列:

[1, 2, 61, 89, 122, 178, 1979, 3958, 5429, 10858, 120719, 176131, 241438, 352262, 10743991, 21487982]

約数ペア:

[(1, 21487982), (2, 10743991), (61, 352262), (89, 241438), (122, 176131), (178, 120719), (1979, 10858), (3958, 5429)]