199835260

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{857}}^1$

素因数の和:1086

約数の個数: 48

約数和(自身を含む): 428107680

約数和(自身を除く): 228272420

約数列:

[1, 2, 4, 5, 10, 20, 89, 131, 178, 262, 356, 445, 524, 655, 857, 890, 1310, 1714, 1780, 2620, 3428, 4285, 8570, 11659, 17140, 23318, 46636, 58295, 76273, 112267, 116590, 152546, 224534, 233180, 305092, 381365, 449068, 561335, 762730, 1122670, 1525460, 2245340, 9991763, 19983526, 39967052, 49958815, 99917630, 199835260]

約数ペア:

[(1, 199835260), (2, 99917630), (4, 49958815), (5, 39967052), (10, 19983526), (20, 9991763), (89, 2245340), (131, 1525460), (178, 1122670), (262, 762730), (356, 561335), (445, 449068), (524, 381365), (655, 305092), (857, 233180), (890, 224534), (1310, 152546), (1714, 116590), (1780, 112267), (2620, 76273), (3428, 58295), (4285, 46636), (8570, 23318), (11659, 17140)]