521003097

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{378361}}^1$

素因数の和:378390

約数の個数: 20

約数和(自身を含む): 824072436

約数和(自身を除く): 303069339

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 378361, 1135083, 3405249, 6432137, 10215747, 19296411, 30647241, 57889233, 173667699, 521003097]

約数ペア:

[(1, 521003097), (3, 173667699), (9, 57889233), (17, 30647241), (27, 19296411), (51, 10215747), (81, 6432137), (153, 3405249), (459, 1135083), (1377, 378361)]