20198984967

素因数分解:

$3^2\times 7^3\times {\mathrm{29}}^1\times {\mathrm{225629}}^1$

素因数の和:225685

約数の個数: 48

約数和(自身を含む): 35198280000

約数和(自身を除く): 14999295033

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 343, 441, 609, 1029, 1421, 1827, 3087, 4263, 9947, 12789, 29841, 89523, 225629, 676887, 1579403, 2030661, 4738209, 6543241, 11055821, 14214627, 19629723, 33167463, 45802687, 58889169, 77390747, 99502389, 137408061, 232172241, 320618809, 412224183, 696516723, 961856427, 2244331663, 2885569281, 6732994989, 20198984967]

約数ペア:

[(1, 20198984967), (3, 6732994989), (7, 2885569281), (9, 2244331663), (21, 961856427), (29, 696516723), (49, 412224183), (63, 320618809), (87, 232172241), (147, 137408061), (203, 99502389), (261, 77390747), (343, 58889169), (441, 45802687), (609, 33167463), (1029, 19629723), (1421, 14214627), (1827, 11055821), (3087, 6543241), (4263, 4738209), (9947, 2030661), (12789, 1579403), (29841, 676887), (89523, 225629)]