40455220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11969}}^1$

素因数の和:12004

約数の個数: 36

約数和(自身を含む): 92001420

約数和(自身を除く): 51546200

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 11969, 23938, 47876, 59845, 119690, 155597, 239380, 311194, 622388, 777985, 1555970, 2022761, 3111940, 4045522, 8091044, 10113805, 20227610, 40455220]

約数ペア:

[(1, 40455220), (2, 20227610), (4, 10113805), (5, 8091044), (10, 4045522), (13, 3111940), (20, 2022761), (26, 1555970), (52, 777985), (65, 622388), (130, 311194), (169, 239380), (260, 155597), (338, 119690), (676, 59845), (845, 47876), (1690, 23938), (3380, 11969)]