31782140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{9403}}^1$

素因数の和:9438

約数の個数: 36

約数和(自身を含む): 72279144

約数和(自身を除く): 40497004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 9403, 18806, 37612, 47015, 94030, 122239, 188060, 244478, 488956, 611195, 1222390, 1589107, 2444780, 3178214, 6356428, 7945535, 15891070, 31782140]

約数ペア:

[(1, 31782140), (2, 15891070), (4, 7945535), (5, 6356428), (10, 3178214), (13, 2444780), (20, 1589107), (26, 1222390), (52, 611195), (65, 488956), (130, 244478), (169, 188060), (260, 122239), (338, 94030), (676, 47015), (845, 37612), (1690, 18806), (3380, 9403)]