201978680

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{26437}}^1$

素因数の和:26639

約数の個数: 32

約数和(自身を含む): 456848640

約数和(自身を除く): 254869960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 26437, 52874, 105748, 132185, 211496, 264370, 528740, 1057480, 5049467, 10098934, 20197868, 25247335, 40395736, 50494670, 100989340, 201978680]

約数ペア:

[(1, 201978680), (2, 100989340), (4, 50494670), (5, 40395736), (8, 25247335), (10, 20197868), (20, 10098934), (40, 5049467), (191, 1057480), (382, 528740), (764, 264370), (955, 211496), (1528, 132185), (1910, 105748), (3820, 52874), (7640, 26437)]