21072945

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3593}}^1$

素因数の和:3641

約数の個数: 32

約数和(自身を含む): 37262592

約数和(自身を除く): 16189647

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3593, 5865, 10779, 17965, 53895, 61081, 82639, 183243, 247917, 305405, 413195, 916215, 1239585, 1404863, 4214589, 7024315, 21072945]

約数ペア:

[(1, 21072945), (3, 7024315), (5, 4214589), (15, 1404863), (17, 1239585), (23, 916215), (51, 413195), (69, 305405), (85, 247917), (115, 183243), (255, 82639), (345, 61081), (391, 53895), (1173, 17965), (1955, 10779), (3593, 5865)]