21172578

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{5197}}^1$

素因数の和:5306

約数の個数: 32

約数和(自身を含む): 48902784

約数和(自身を除く): 27730206

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 97, 194, 291, 582, 679, 1358, 2037, 4074, 5197, 10394, 15591, 31182, 36379, 72758, 109137, 218274, 504109, 1008218, 1512327, 3024654, 3528763, 7057526, 10586289, 21172578]

約数ペア:

[(1, 21172578), (2, 10586289), (3, 7057526), (6, 3528763), (7, 3024654), (14, 1512327), (21, 1008218), (42, 504109), (97, 218274), (194, 109137), (291, 72758), (582, 36379), (679, 31182), (1358, 15591), (2037, 10394), (4074, 5197)]