217635520

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8609}}^1$

素因数の和:8705

約数の個数: 56

約数和(自身を含む): 524865600

約数和(自身を除く): 307230080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 3160, 5056, 6320, 8609, 12640, 17218, 25280, 34436, 43045, 68872, 86090, 137744, 172180, 275488, 344360, 550976, 680111, 688720, 1360222, 1377440, 2720444, 2754880, 3400555, 5440888, 6801110, 10881776, 13602220, 21763552, 27204440, 43527104, 54408880, 108817760, 217635520]

約数ペア:

[(1, 217635520), (2, 108817760), (4, 54408880), (5, 43527104), (8, 27204440), (10, 21763552), (16, 13602220), (20, 10881776), (32, 6801110), (40, 5440888), (64, 3400555), (79, 2754880), (80, 2720444), (158, 1377440), (160, 1360222), (316, 688720), (320, 680111), (395, 550976), (632, 344360), (790, 275488), (1264, 172180), (1580, 137744), (2528, 86090), (3160, 68872), (5056, 43045), (6320, 34436), (8609, 25280), (12640, 17218)]