20216385007

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3128987}}^1$

素因数の和:3129078

約数の個数: 16

約数和(自身を含む): 25232159232

約数和(自身を除く): 5015774225

約数列:

[1, 7, 13, 71, 91, 497, 923, 6461, 3128987, 21902909, 40676831, 222158077, 284737817, 1555106539, 2888055001, 20216385007]

約数ペア:

[(1, 20216385007), (7, 2888055001), (13, 1555106539), (71, 284737817), (91, 222158077), (497, 40676831), (923, 21902909), (6461, 3128987)]