21007766

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{4957}}^1$

素因数の和:5135

約数の個数: 16

約数和(自身を含む): 34150704

約数和(自身を除く): 13142938

約数列:

[1, 2, 13, 26, 163, 326, 2119, 4238, 4957, 9914, 64441, 128882, 807991, 1615982, 10503883, 21007766]

約数ペア:

[(1, 21007766), (2, 10503883), (13, 1615982), (26, 807991), (163, 128882), (326, 64441), (2119, 9914), (4238, 4957)]