208538275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{331}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 296409600

約数和(自身を除く): 87871325

約数列:

[1, 5, 11, 25, 29, 55, 79, 145, 275, 319, 331, 395, 725, 869, 1595, 1655, 1975, 2291, 3641, 4345, 7975, 8275, 9599, 11455, 18205, 21725, 25201, 26149, 47995, 57275, 91025, 105589, 126005, 130745, 239975, 287639, 527945, 630025, 653725, 758321, 1438195, 2639725, 3791605, 7190975, 8341531, 18958025, 41707655, 208538275]

約数ペア:

[(1, 208538275), (5, 41707655), (11, 18958025), (25, 8341531), (29, 7190975), (55, 3791605), (79, 2639725), (145, 1438195), (275, 758321), (319, 653725), (331, 630025), (395, 527945), (725, 287639), (869, 239975), (1595, 130745), (1655, 126005), (1975, 105589), (2291, 91025), (3641, 57275), (4345, 47995), (7975, 26149), (8275, 25201), (9599, 21725), (11455, 18205)]