21791943

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{241}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 34499520

約数和(自身を除く): 12707577

約数列:

[1, 3, 9, 17, 27, 51, 153, 197, 241, 459, 591, 723, 1773, 2169, 3349, 4097, 5319, 6507, 10047, 12291, 30141, 36873, 47477, 90423, 110619, 142431, 427293, 807109, 1281879, 2421327, 7263981, 21791943]

約数ペア:

[(1, 21791943), (3, 7263981), (9, 2421327), (17, 1281879), (27, 807109), (51, 427293), (153, 142431), (197, 110619), (241, 90423), (459, 47477), (591, 36873), (723, 30141), (1773, 12291), (2169, 10047), (3349, 6507), (4097, 5319)]