19813105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 27498240

約数和(自身を除く): 7685135

約数列:

[1, 5, 13, 19, 61, 65, 95, 247, 263, 305, 793, 1159, 1235, 1315, 3419, 3965, 4997, 5795, 15067, 16043, 17095, 24985, 64961, 75335, 80215, 208559, 304817, 324805, 1042795, 1524085, 3962621, 19813105]

約数ペア:

[(1, 19813105), (5, 3962621), (13, 1524085), (19, 1042795), (61, 324805), (65, 304817), (95, 208559), (247, 80215), (263, 75335), (305, 64961), (793, 24985), (1159, 17095), (1235, 16043), (1315, 15067), (3419, 5795), (3965, 4997)]