21031608003

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{218717}}^1$

素因数の和:218987

約数の個数: 32

約数和(自身を含む): 33875043840

約数和(自身を除く): 12843435837

約数列:

[1, 3, 7, 19, 21, 57, 133, 241, 399, 723, 1687, 4579, 5061, 13737, 32053, 96159, 218717, 656151, 1531019, 4155623, 4593057, 12466869, 29089361, 52710797, 87268083, 158132391, 368975579, 1001505143, 1106926737, 3004515429, 7010536001, 21031608003]

約数ペア:

[(1, 21031608003), (3, 7010536001), (7, 3004515429), (19, 1106926737), (21, 1001505143), (57, 368975579), (133, 158132391), (241, 87268083), (399, 52710797), (723, 29089361), (1687, 12466869), (4579, 4593057), (5061, 4155623), (13737, 1531019), (32053, 656151), (96159, 218717)]