20211550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 39774240

約数和(自身を除く): 19562690

約数列:

[1, 2, 5, 10, 25, 29, 50, 53, 58, 106, 145, 263, 265, 290, 526, 530, 725, 1315, 1325, 1450, 1537, 2630, 2650, 3074, 6575, 7627, 7685, 13150, 13939, 15254, 15370, 27878, 38135, 38425, 69695, 76270, 76850, 139390, 190675, 348475, 381350, 404231, 696950, 808462, 2021155, 4042310, 10105775, 20211550]

約数ペア:

[(1, 20211550), (2, 10105775), (5, 4042310), (10, 2021155), (25, 808462), (29, 696950), (50, 404231), (53, 381350), (58, 348475), (106, 190675), (145, 139390), (263, 76850), (265, 76270), (290, 69695), (526, 38425), (530, 38135), (725, 27878), (1315, 15370), (1325, 15254), (1450, 13939), (1537, 13150), (2630, 7685), (2650, 7627), (3074, 6575)]