217414519

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 257862528

約数和(自身を除く): 40448009

約数列:

[1, 7, 49, 101, 197, 223, 707, 1379, 1561, 4949, 9653, 10927, 19897, 22523, 43931, 139279, 157661, 307517, 974953, 1103627, 2152619, 4437031, 31059217, 217414519]

約数ペア:

[(1, 217414519), (7, 31059217), (49, 4437031), (101, 2152619), (197, 1103627), (223, 974953), (707, 307517), (1379, 157661), (1561, 139279), (4949, 43931), (9653, 22523), (10927, 19897)]