21000751972

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{4817}}^1\times {\mathrm{35159}}^1$

素因数の和:40011

約数の個数: 24

約数和(自身を含む): 37945797120

約数和(自身を除く): 16945045148

約数列:

[1, 2, 4, 31, 62, 124, 4817, 9634, 19268, 35159, 70318, 140636, 149327, 298654, 597308, 1089929, 2179858, 4359716, 169360903, 338721806, 677443612, 5250187993, 10500375986, 21000751972]

約数ペア:

[(1, 21000751972), (2, 10500375986), (4, 5250187993), (31, 677443612), (62, 338721806), (124, 169360903), (4817, 4359716), (9634, 2179858), (19268, 1089929), (35159, 597308), (70318, 298654), (140636, 149327)]