20802872972

素因数分解:

$2^2\times 7^2\times {\mathrm{251}}^1\times {\mathrm{422857}}^1$

素因数の和:423126

約数の個数: 36

約数和(自身を含む): 42517526184

約数和(自身を除く): 21714653212

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 251, 502, 1004, 1757, 3514, 7028, 12299, 24598, 49196, 422857, 845714, 1691428, 2959999, 5919998, 11839996, 20719993, 41439986, 82879972, 106137107, 212274214, 424548428, 742959749, 1485919498, 2971838996, 5200718243, 10401436486, 20802872972]

約数ペア:

[(1, 20802872972), (2, 10401436486), (4, 5200718243), (7, 2971838996), (14, 1485919498), (28, 742959749), (49, 424548428), (98, 212274214), (196, 106137107), (251, 82879972), (502, 41439986), (1004, 20719993), (1757, 11839996), (3514, 5919998), (7028, 2959999), (12299, 1691428), (24598, 845714), (49196, 422857)]