289767520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{258721}}^1$

素因数の和:258743

約数の個数: 48

約数和(自身を含む): 782375328

約数和(自身を除く): 492607808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 258721, 517442, 1034884, 1293605, 1811047, 2069768, 2587210, 3622094, 4139536, 5174420, 7244188, 8279072, 9055235, 10348840, 14488376, 18110470, 20697680, 28976752, 36220940, 41395360, 57953504, 72441880, 144883760, 289767520]

約数ペア:

[(1, 289767520), (2, 144883760), (4, 72441880), (5, 57953504), (7, 41395360), (8, 36220940), (10, 28976752), (14, 20697680), (16, 18110470), (20, 14488376), (28, 10348840), (32, 9055235), (35, 8279072), (40, 7244188), (56, 5174420), (70, 4139536), (80, 3622094), (112, 2587210), (140, 2069768), (160, 1811047), (224, 1293605), (280, 1034884), (560, 517442), (1120, 258721)]