20195021

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 25714752

約数和(自身を除く): 5519731

約数列:

[1, 7, 11, 77, 113, 121, 211, 791, 847, 1243, 1477, 2321, 8701, 13673, 16247, 23843, 25531, 95711, 166901, 178717, 262273, 1835911, 2885003, 20195021]

約数ペア:

[(1, 20195021), (7, 2885003), (11, 1835911), (77, 262273), (113, 178717), (121, 166901), (211, 95711), (791, 25531), (847, 23843), (1243, 16247), (1477, 13673), (2321, 8701)]