21184877

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1321}}^1$

素因数の和:1436

約数の個数: 16

約数和(自身を含む): 25382400

約数和(自身を除く): 4197523

約数列:

[1, 7, 29, 79, 203, 553, 1321, 2291, 9247, 16037, 38309, 104359, 268163, 730513, 3026411, 21184877]

約数ペア:

[(1, 21184877), (7, 3026411), (29, 730513), (79, 268163), (203, 104359), (553, 38309), (1321, 16037), (2291, 9247)]