220967560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1291}}^1$

素因数の和:1702

約数の個数: 64

約数和(自身を含む): 544190400

約数和(自身を除く): 323222840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 389, 440, 778, 1291, 1556, 1945, 2582, 3112, 3890, 4279, 5164, 6455, 7780, 8558, 10328, 12910, 14201, 15560, 17116, 21395, 25820, 28402, 34232, 42790, 51640, 56804, 71005, 85580, 113608, 142010, 171160, 284020, 502199, 568040, 1004398, 2008796, 2510995, 4017592, 5021990, 5524189, 10043980, 11048378, 20087960, 22096756, 27620945, 44193512, 55241890, 110483780, 220967560]

約数ペア:

[(1, 220967560), (2, 110483780), (4, 55241890), (5, 44193512), (8, 27620945), (10, 22096756), (11, 20087960), (20, 11048378), (22, 10043980), (40, 5524189), (44, 5021990), (55, 4017592), (88, 2510995), (110, 2008796), (220, 1004398), (389, 568040), (440, 502199), (778, 284020), (1291, 171160), (1556, 142010), (1945, 113608), (2582, 85580), (3112, 71005), (3890, 56804), (4279, 51640), (5164, 42790), (6455, 34232), (7780, 28402), (8558, 25820), (10328, 21395), (12910, 17116), (14201, 15560)]