261080

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 602640

約数和(自身を除く): 341560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 107, 122, 214, 244, 305, 428, 488, 535, 610, 856, 1070, 1220, 2140, 2440, 4280, 6527, 13054, 26108, 32635, 52216, 65270, 130540, 261080]

約数ペア:

[(1, 261080), (2, 130540), (4, 65270), (5, 52216), (8, 32635), (10, 26108), (20, 13054), (40, 6527), (61, 4280), (107, 2440), (122, 2140), (214, 1220), (244, 1070), (305, 856), (428, 610), (488, 535)]