217691810

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{63467}}^1$

素因数の和:63495

約数の個数: 32

約数和(自身を含む): 456969600

約数和(自身を除く): 239277790

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 63467, 126934, 317335, 444269, 634670, 888538, 2221345, 3109883, 4442690, 6219766, 15549415, 21769181, 31098830, 43538362, 108845905, 217691810]

約数ペア:

[(1, 217691810), (2, 108845905), (5, 43538362), (7, 31098830), (10, 21769181), (14, 15549415), (35, 6219766), (49, 4442690), (70, 3109883), (98, 2221345), (245, 888538), (343, 634670), (490, 444269), (686, 317335), (1715, 126934), (3430, 63467)]