30702980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19937}}^1$

素因数の和:19964

約数の個数: 48

約数和(自身を含む): 80390016

約数和(自身を除く): 49687036

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 19937, 39874, 79748, 99685, 139559, 199370, 219307, 279118, 398740, 438614, 558236, 697795, 877228, 1096535, 1395590, 1535149, 2193070, 2791180, 3070298, 4386140, 6140596, 7675745, 15351490, 30702980]

約数ペア:

[(1, 30702980), (2, 15351490), (4, 7675745), (5, 6140596), (7, 4386140), (10, 3070298), (11, 2791180), (14, 2193070), (20, 1535149), (22, 1395590), (28, 1096535), (35, 877228), (44, 697795), (55, 558236), (70, 438614), (77, 398740), (110, 279118), (140, 219307), (154, 199370), (220, 139559), (308, 99685), (385, 79748), (770, 39874), (1540, 19937)]