19821789

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{887}}^1$

素因数の和:1097

約数の個数: 24

約数和(自身を含む): 31030272

約数和(自身を除く): 11208483

約数列:

[1, 3, 9, 13, 39, 117, 191, 573, 887, 1719, 2483, 2661, 7449, 7983, 11531, 22347, 34593, 103779, 169417, 508251, 1524753, 2202421, 6607263, 19821789]

約数ペア:

[(1, 19821789), (3, 6607263), (9, 2202421), (13, 1524753), (39, 508251), (117, 169417), (191, 103779), (573, 34593), (887, 22347), (1719, 11531), (2483, 7983), (2661, 7449)]