21720454

素因数分解:

$2^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{15361}}^1$

素因数の和:15471

約数の個数: 16

約数和(自身を含む): 37606176

約数和(自身を除く): 15885722

約数列:

[1, 2, 7, 14, 101, 202, 707, 1414, 15361, 30722, 107527, 215054, 1551461, 3102922, 10860227, 21720454]

約数ペア:

[(1, 21720454), (2, 10860227), (7, 3102922), (14, 1551461), (101, 215054), (202, 107527), (707, 30722), (1414, 15361)]