638761905

素因数分解:

$3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{52379}}^1$

素因数の和:52661

約数の個数: 24

約数和(自身を含む): 1111294080

約数和(自身を除く): 472532175

約数列:

[1, 3, 5, 9, 15, 45, 271, 813, 1355, 2439, 4065, 12195, 52379, 157137, 261895, 471411, 785685, 2357055, 14194709, 42584127, 70973545, 127752381, 212920635, 638761905]

約数ペア:

[(1, 638761905), (3, 212920635), (5, 127752381), (9, 70973545), (15, 42584127), (45, 14194709), (271, 2357055), (813, 785685), (1355, 471411), (2439, 261895), (4065, 157137), (12195, 52379)]