21689902

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{20347}}^1$

素因数の和:20403

約数の個数: 16

約数和(自身を含む): 35893872

約数和(自身を除く): 14203970

約数列:

[1, 2, 13, 26, 41, 82, 533, 1066, 20347, 40694, 264511, 529022, 834227, 1668454, 10844951, 21689902]

約数ペア:

[(1, 21689902), (2, 10844951), (13, 1668454), (26, 834227), (41, 529022), (82, 264511), (533, 40694), (1066, 20347)]