21408365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{1447}}^1$

素因数の和:1732

約数の個数: 16

約数和(自身を含む): 28149120

約数和(自身を除く): 6740755

約数列:

[1, 5, 11, 55, 269, 1345, 1447, 2959, 7235, 14795, 15917, 79585, 389243, 1946215, 4281673, 21408365]

約数ペア:

[(1, 21408365), (5, 4281673), (11, 1946215), (55, 389243), (269, 79585), (1345, 15917), (1447, 14795), (2959, 7235)]