8455840

素因数分解:

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

素因数の和:1345

約数の個数: 48

約数和(自身を含む): 20480040

約数和(自身を除く): 12024200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1289, 1312, 1640, 2578, 3280, 5156, 6445, 6560, 10312, 12890, 20624, 25780, 41248, 51560, 52849, 103120, 105698, 206240, 211396, 264245, 422792, 528490, 845584, 1056980, 1691168, 2113960, 4227920, 8455840]

約数ペア:

[(1, 8455840), (2, 4227920), (4, 2113960), (5, 1691168), (8, 1056980), (10, 845584), (16, 528490), (20, 422792), (32, 264245), (40, 211396), (41, 206240), (80, 105698), (82, 103120), (160, 52849), (164, 51560), (205, 41248), (328, 25780), (410, 20624), (656, 12890), (820, 10312), (1289, 6560), (1312, 6445), (1640, 5156), (2578, 3280)]