81403972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{29537}}^1$

素因数の和:29607

約数の個数: 24

約数和(自身を含む): 156315096

約数和(自身を除く): 74911124

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 29537, 59074, 118148, 383981, 767962, 1535924, 1565461, 3130922, 6261844, 20350993, 40701986, 81403972]

約数ペア:

[(1, 81403972), (2, 40701986), (4, 20350993), (13, 6261844), (26, 3130922), (52, 1565461), (53, 1535924), (106, 767962), (212, 383981), (689, 118148), (1378, 59074), (2756, 29537)]