15641997

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 9702003

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 199, 399, 591, 597, 1379, 1393, 3743, 3781, 4137, 4179, 11229, 11343, 26201, 26467, 39203, 78603, 79401, 117609, 274421, 744857, 823263, 2234571, 5213999, 15641997]

約数ペア:

[(1, 15641997), (3, 5213999), (7, 2234571), (19, 823263), (21, 744857), (57, 274421), (133, 117609), (197, 79401), (199, 78603), (399, 39203), (591, 26467), (597, 26201), (1379, 11343), (1393, 11229), (3743, 4179), (3781, 4137)]