21297760

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12101}}^1$

素因数の和:12127

約数の個数: 48

約数和(自身を含む): 54894672

約数和(自身を除く): 33596912

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12101, 24202, 48404, 60505, 96808, 121010, 133111, 193616, 242020, 266222, 387232, 484040, 532444, 665555, 968080, 1064888, 1331110, 1936160, 2129776, 2662220, 4259552, 5324440, 10648880, 21297760]

約数ペア:

[(1, 21297760), (2, 10648880), (4, 5324440), (5, 4259552), (8, 2662220), (10, 2129776), (11, 1936160), (16, 1331110), (20, 1064888), (22, 968080), (32, 665555), (40, 532444), (44, 484040), (55, 387232), (80, 266222), (88, 242020), (110, 193616), (160, 133111), (176, 121010), (220, 96808), (352, 60505), (440, 48404), (880, 24202), (1760, 12101)]