199681559

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 259338240

約数和(自身を除く): 59656681

約数列:

[1, 7, 11, 29, 77, 203, 223, 319, 401, 1561, 2233, 2453, 2807, 4411, 6467, 11629, 17171, 30877, 45269, 71137, 81403, 89423, 127919, 497959, 625961, 895433, 983653, 2593267, 6885571, 18152869, 28525937, 199681559]

約数ペア:

[(1, 199681559), (7, 28525937), (11, 18152869), (29, 6885571), (77, 2593267), (203, 983653), (223, 895433), (319, 625961), (401, 497959), (1561, 127919), (2233, 89423), (2453, 81403), (2807, 71137), (4411, 45269), (6467, 30877), (11629, 17171)]