208744855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{641}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 284000256

約数和(自身を除く): 75255401

約数列:

[1, 5, 11, 31, 55, 155, 191, 341, 641, 955, 1705, 2101, 3205, 5921, 7051, 10505, 19871, 29605, 35255, 65131, 99355, 122431, 218581, 325655, 612155, 1092905, 1346741, 3795361, 6733705, 18976805, 41748971, 208744855]

約数ペア:

[(1, 208744855), (5, 41748971), (11, 18976805), (31, 6733705), (55, 3795361), (155, 1346741), (191, 1092905), (341, 612155), (641, 325655), (955, 218581), (1705, 122431), (2101, 99355), (3205, 65131), (5921, 35255), (7051, 29605), (10505, 19871)]