680673890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{11927}}^1$

素因数の和:12386

約数の個数: 32

約数和(自身を含む): 1322576640

約数和(自身を除く): 641902750

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 439, 878, 2195, 4390, 5707, 11414, 11927, 23854, 28535, 57070, 59635, 119270, 155051, 310102, 775255, 1550510, 5235953, 10471906, 26179765, 52359530, 68067389, 136134778, 340336945, 680673890]

約数ペア:

[(1, 680673890), (2, 340336945), (5, 136134778), (10, 68067389), (13, 52359530), (26, 26179765), (65, 10471906), (130, 5235953), (439, 1550510), (878, 775255), (2195, 310102), (4390, 155051), (5707, 119270), (11414, 59635), (11927, 57070), (23854, 28535)]