289774998

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{226741}}^1$

素因数の和:226820

約数の個数: 24

約数和(自身を含む): 636691536

約数和(自身を除く): 346916538

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 226741, 453482, 680223, 1360446, 2040669, 4081338, 16098611, 32197222, 48295833, 96591666, 144887499, 289774998]

約数ペア:

[(1, 289774998), (2, 144887499), (3, 96591666), (6, 48295833), (9, 32197222), (18, 16098611), (71, 4081338), (142, 2040669), (213, 1360446), (426, 680223), (639, 453482), (1278, 226741)]