197492780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{110951}}^1$

素因数の和:111049

約数の個数: 24

約数和(自身を含む): 419398560

約数和(自身を除く): 221905780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 110951, 221902, 443804, 554755, 1109510, 2219020, 9874639, 19749278, 39498556, 49373195, 98746390, 197492780]

約数ペア:

[(1, 197492780), (2, 98746390), (4, 49373195), (5, 39498556), (10, 19749278), (20, 9874639), (89, 2219020), (178, 1109510), (356, 554755), (445, 443804), (890, 221902), (1780, 110951)]