19778278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{40037}}^1$

素因数の和:40071

約数の個数: 16

約数和(自身を含む): 33631920

約数和(自身を除く): 13853642

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 40037, 80074, 520481, 760703, 1040962, 1521406, 9889139, 19778278]

約数ペア:

[(1, 19778278), (2, 9889139), (13, 1521406), (19, 1040962), (26, 760703), (38, 520481), (247, 80074), (494, 40037)]