19581305

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 26188800

約数和(自身を除く): 6607495

約数列:

[1, 5, 19, 31, 61, 95, 109, 155, 305, 545, 589, 1159, 1891, 2071, 2945, 3379, 5795, 6649, 9455, 10355, 16895, 33245, 35929, 64201, 126331, 179645, 206119, 321005, 631655, 1030595, 3916261, 19581305]

約数ペア:

[(1, 19581305), (5, 3916261), (19, 1030595), (31, 631655), (61, 321005), (95, 206119), (109, 179645), (155, 126331), (305, 64201), (545, 35929), (589, 33245), (1159, 16895), (1891, 10355), (2071, 9455), (2945, 6649), (3379, 5795)]