21459272

素因数分解:

$2^3\times {\mathrm{1289}}^1\times {\mathrm{2081}}^1$

素因数の和:3376

約数の個数: 16

約数和(自身を含む): 40286700

約数和(自身を除く): 18827428

約数列:

[1, 2, 4, 8, 1289, 2081, 2578, 4162, 5156, 8324, 10312, 16648, 2682409, 5364818, 10729636, 21459272]

約数ペア:

[(1, 21459272), (2, 10729636), (4, 5364818), (8, 2682409), (1289, 16648), (2081, 10312), (2578, 8324), (4162, 5156)]