21537760

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{593}}^1$

素因数の和:835

約数の個数: 48

約数和(自身を含む): 51193296

約数和(自身を除く): 29655536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 593, 908, 1135, 1186, 1816, 2270, 2372, 2965, 3632, 4540, 4744, 5930, 7264, 9080, 9488, 11860, 18160, 18976, 23720, 36320, 47440, 94880, 134611, 269222, 538444, 673055, 1076888, 1346110, 2153776, 2692220, 4307552, 5384440, 10768880, 21537760]

約数ペア:

[(1, 21537760), (2, 10768880), (4, 5384440), (5, 4307552), (8, 2692220), (10, 2153776), (16, 1346110), (20, 1076888), (32, 673055), (40, 538444), (80, 269222), (160, 134611), (227, 94880), (454, 47440), (593, 36320), (908, 23720), (1135, 18976), (1186, 18160), (1816, 11860), (2270, 9488), (2372, 9080), (2965, 7264), (3632, 5930), (4540, 4744)]