19912490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3259}}^1$

素因数の和:3326

約数の個数: 32

約数和(自身を含む): 39432960

約数和(自身を除く): 19520470

約数列:

[1, 2, 5, 10, 13, 26, 47, 65, 94, 130, 235, 470, 611, 1222, 3055, 3259, 6110, 6518, 16295, 32590, 42367, 84734, 153173, 211835, 306346, 423670, 765865, 1531730, 1991249, 3982498, 9956245, 19912490]

約数ペア:

[(1, 19912490), (2, 9956245), (5, 3982498), (10, 1991249), (13, 1531730), (26, 765865), (47, 423670), (65, 306346), (94, 211835), (130, 153173), (235, 84734), (470, 42367), (611, 32590), (1222, 16295), (3055, 6518), (3259, 6110)]