4227920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1289}}^1$

素因数の和:1343

約数の個数: 40

約数和(自身を含む): 10077480

約数和(自身を除く): 5849560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1289, 1640, 2578, 3280, 5156, 6445, 10312, 12890, 20624, 25780, 51560, 52849, 103120, 105698, 211396, 264245, 422792, 528490, 845584, 1056980, 2113960, 4227920]

約数ペア:

[(1, 4227920), (2, 2113960), (4, 1056980), (5, 845584), (8, 528490), (10, 422792), (16, 264245), (20, 211396), (40, 105698), (41, 103120), (80, 52849), (82, 51560), (164, 25780), (205, 20624), (328, 12890), (410, 10312), (656, 6445), (820, 5156), (1289, 3280), (1640, 2578)]